Try to export project and then import it.

Else please place the error code here.

I tried to export and import it but that didn't make a difference so here is the error code:

02-01-2018 17:09:45 [EXCEPTION] De objectverwijzing is niet op een exemplaar van een object ingesteld. WebSiteX5    bij (Object )     bij ..(Object )     bij .. ()     bij ..( )     bij ..( , PaneEnum )     bij ..(Object , )     bij (Object , Object , )     bij ..(Object , Object , )     bij ..(PaneEnum )     bij .. (Object , EventArgs )     bij System.Windows.Forms.Control.OnDoubleClick(EventArgs e)     bij System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)     bij System.Windows.Forms.Control.WndProc(Message& m)     bij Atalasoft.Imaging.WinControls.Scrollport.WndProc(Message& m)     bij System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)     bij System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)     bij System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)  02-01-2018 17:09:43 [INFO] wizPageCreation 02-01-2018 17:09:39 [INFO] wizPlanWebsite 02-01-2018 17:09:37 [INFO] Waiting 1 Threads 02-01-2018 17:09:37 [INFO] 0 Page 81 - End 11 02-01-2018 17:09:37 [INFO] Page 81 - Ending... 11 02-01-2018 17:09:37 [INFO] Change time: 81 2018-01-02 18:09:37 02-01-2018 17:09:37 [INFO] 98 Page 55 - End 10 02-01-2018 17:09:37 [INFO] Page 55 - Ending... 10 02-01-2018 17:09:37 [INFO] Change time: 55 2018-01-02 18:09:37 02-01-2018 17:09:37 [INFO] 97 Page 76 - End 12 02-01-2018 17:09:37 [INFO] Page 76 - Ending... 12 02-01-2018 17:09:37 [INFO] Change time: 76 2018-01-02 18:09:37 02-01-2018 17:09:37 [INFO] Waiting 4 Threads 02-01-2018 17:09:37 [INFO] 96 Page 59 - End 17 02-01-2018 17:09:37 [INFO] Page 59 - Ending... 17 02-01-2018 17:09:37 [INFO] Change time: 59 2018-01-02 18:09:37 02-01-2018 17:09:36 [INFO] Waiting 5 Threads 02-01-2018 17:09:36 [INFO] 95 Page 80 - End 16 02-01-2018 17:09:36 [INFO] Page 80 - Ending... 16 02-01-2018 17:09:36 [INFO] Change time: 80 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Waiting 6 Threads 02-01-2018 17:09:36 [INFO] 94 Page 75 - End 9 02-01-2018 17:09:36 [INFO] Page 75 - Ending... 9 02-01-2018 17:09:36 [INFO] Change time: 75 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Waiting 8 Threads 02-01-2018 17:09:36 [INFO] 93 Page 73 - End 3 02-01-2018 17:09:36 [INFO] Page 73 - Ending... 3 02-01-2018 17:09:36 [INFO] Change time: 73 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] 92 Page 68 - End 7 02-01-2018 17:09:36 [INFO] Page 68 - Ending... 7 02-01-2018 17:09:36 [INFO] Change time: 68 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Waiting 12 Threads 02-01-2018 17:09:36 [INFO] 91 Page 79 - End 8 02-01-2018 17:09:36 [INFO] Page 79 - Ending... 8 02-01-2018 17:09:36 [INFO] Change time: 79 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] 90 Page 78 - End 13 02-01-2018 17:09:36 [INFO] Page 78 - Ending... 13 02-01-2018 17:09:36 [INFO] Change time: 78 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 81 - Start 11 02-01-2018 17:09:36 [INFO] 89 Page 77 - End 11 02-01-2018 17:09:36 [INFO] Page 77 - Ending... 11 02-01-2018 17:09:36 [INFO] Change time: 77 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 80 - Start 16 02-01-2018 17:09:36 [INFO] 88 Page 66 - End 16 02-01-2018 17:09:36 [INFO] Page 66 - Ending... 16 02-01-2018 17:09:36 [INFO] Waiting 14 Threads 02-01-2018 17:09:36 [INFO] Change time: 66 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 79 - Start 8 02-01-2018 17:09:36 [INFO] 87 Page 56 - End 8 02-01-2018 17:09:36 [INFO] Page 56 - Ending... 8 02-01-2018 17:09:36 [INFO] Change time: 56 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 78 - Start 13 02-01-2018 17:09:36 [INFO] 86 Page 65 - End 13 02-01-2018 17:09:36 [INFO] Page 65 - Ending... 13 02-01-2018 17:09:36 [INFO] Change time: 65 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Waiting 14 Threads 02-01-2018 17:09:36 [INFO] Waiting 15 Threads 02-01-2018 17:09:36 [INFO] Page 77 - Start 11 02-01-2018 17:09:36 [INFO] 85 Page 74 - End 11 02-01-2018 17:09:36 [INFO] Page 74 - Ending... 11 02-01-2018 17:09:36 [INFO] Change time: 74 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Waiting 18 Threads 02-01-2018 17:09:36 [INFO] Page 76 - Start 12 02-01-2018 17:09:36 [INFO] 84 Page 64 - End 12 02-01-2018 17:09:36 [INFO] Page 64 - Ending... 12 02-01-2018 17:09:36 [INFO] Change time: 64 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 75 - Start 9 02-01-2018 17:09:36 [INFO] 83 Page 39 - End 9 02-01-2018 17:09:36 [INFO] Page 39 - Ending... 9 02-01-2018 17:09:36 [INFO] Change time: 39 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 74 - Start 11 02-01-2018 17:09:36 [INFO] 82 Page 71 - End 11 02-01-2018 17:09:36 [INFO] Page 71 - Ending... 11 02-01-2018 17:09:36 [INFO] Change time: 71 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Page 73 - Start 3 02-01-2018 17:09:36 [INFO] 81 Page 67 - End 3 02-01-2018 17:09:36 [INFO] Page 67 - Ending... 3 02-01-2018 17:09:36 [INFO] Change time: 67 2018-01-02 18:09:36 02-01-2018 17:09:36 [INFO] Waiting 21 Threads 02-01-2018 17:09:36 [INFO] Page 71 - Start 11 02-01-2018 17:09:36 [INFO] 80 Page 61 - End 11 02-01-2018 17:09:36 [INFO] Page 61 - Ending... 11 02-01-2018 17:09:35 [INFO] Change time: 61 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Page 68 - Start 7 02-01-2018 17:09:35 [INFO] 79 Page 43 - End 7 02-01-2018 17:09:35 [INFO] Page 43 - Ending... 7 02-01-2018 17:09:35 [INFO] Change time: 43 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Page 67 - Start 3 02-01-2018 17:09:35 [INFO] 78 Page 50 - End 3 02-01-2018 17:09:35 [INFO] Waiting 24 Threads 02-01-2018 17:09:35 [INFO] Change time: 50 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Page 66 - Start 16 02-01-2018 17:09:35 [INFO] Page 65 - Start 13 02-01-2018 17:09:35 [INFO] 77 Page 3 - End 16 02-01-2018 17:09:35 [INFO] 77 Page 63 - End 13 02-01-2018 17:09:35 [INFO] Page 3 - Ending... 16 02-01-2018 17:09:35 [INFO] Page 3 - Ending... 16 02-01-2018 17:09:35 [INFO] Page 63 - Ending... 13 02-01-2018 17:09:35 [INFO] Change time: 63 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Change time: 3 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Page 64 - Start 12 02-01-2018 17:09:35 [INFO] 75 Page 62 - End 12 02-01-2018 17:09:35 [INFO] Page 62 - Ending... 12 02-01-2018 17:09:35 [INFO] Waiting 25 Threads 02-01-2018 17:09:35 [INFO] Change time: 62 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Waiting 28 Threads 02-01-2018 17:09:35 [INFO] Page 63 - Start 13 02-01-2018 17:09:35 [INFO] 73 Page 60 - End 13 02-01-2018 17:09:35 [INFO] Page 62 - Start 12 02-01-2018 17:09:35 [INFO] Page 61 - Start 11 02-01-2018 17:09:35 [INFO] 73 Page 58 - End 12 02-01-2018 17:09:35 [INFO] 73 Page 57 - End 11 02-01-2018 17:09:35 [INFO] Page 58 - Ending... 12 02-01-2018 17:09:35 [INFO] Page 60 - Ending... 13 02-01-2018 17:09:35 [INFO] Page 60 - Ending... 13 02-01-2018 17:09:35 [INFO] Change time: 58 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Change time: 57 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Waiting 28 Threads 02-01-2018 17:09:35 [INFO] Change time: 60 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Waiting 29 Threads 02-01-2018 17:09:35 [INFO] Page 60 - Start 13 02-01-2018 17:09:35 [INFO] 70 Page 51 - End 13 02-01-2018 17:09:35 [INFO] Page 51 - Ending... 13 02-01-2018 17:09:35 [INFO] Change time: 51 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Waiting 30 Threads 02-01-2018 17:09:35 [INFO] Page 59 - Start 17 02-01-2018 17:09:35 [INFO] 69 Page 47 - End 17 02-01-2018 17:09:35 [INFO] Change time: 47 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Change time: 47 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Waiting 32 Threads 02-01-2018 17:09:35 [INFO] Page 58 - Start 12 02-01-2018 17:09:35 [INFO] 68 Page 53 - End 12 02-01-2018 17:09:35 [INFO] Page 53 - Ending... 12 02-01-2018 17:09:35 [INFO] Change time: 53 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Page 57 - Start 11 02-01-2018 17:09:35 [INFO] 67 Page 54 - End 11 02-01-2018 17:09:35 [INFO] Page 54 - Ending... 11 02-01-2018 17:09:35 [INFO] Change time: 54 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Page 56 - Start 8 02-01-2018 17:09:35 [INFO] 66 Page 52 - End 8 02-01-2018 17:09:35 [INFO] Page 52 - Ending... 8 02-01-2018 17:09:35 [INFO] Waiting 33 Threads 02-01-2018 17:09:35 [INFO] Change time: 52 2018-01-02 18:09:35 02-01-2018 17:09:35 [INFO] Waiting 35 Threads 02-01-2018 17:09:34 [INFO] Page 55 - Start 10 02-01-2018 17:09:34 [INFO] 65 Page 49 - End 10 02-01-2018 17:09:34 [INFO] Page 49 - Ending... 10 02-01-2018 17:09:34 [INFO] Change time: 49 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 54 - Start 11 02-01-2018 17:09:34 [INFO] 64 Page 48 - End 11 02-01-2018 17:09:34 [INFO] Page 48 - Ending... 11 02-01-2018 17:09:34 [INFO] Change time: 48 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Waiting 36 Threads 02-01-2018 17:09:34 [INFO] Page 53 - Start 12 02-01-2018 17:09:34 [INFO] 63 Page 45 - End 12 02-01-2018 17:09:34 [INFO] Page 45 - Ending... 12 02-01-2018 17:09:34 [INFO] Change time: 45 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 51 - Start 13 02-01-2018 17:09:34 [INFO] Page 52 - Start 8 02-01-2018 17:09:34 [INFO] 62 Page 28 - End 8 02-01-2018 17:09:34 [INFO] 62 Page 27 - End 13 02-01-2018 17:09:34 [INFO] Page 28 - Ending... 8 02-01-2018 17:09:34 [INFO] Waiting 41 Threads 02-01-2018 17:09:34 [INFO] Change time: 28 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 50 - Start 3 02-01-2018 17:09:34 [INFO] 60 Page 37 - End 3 02-01-2018 17:09:34 [INFO] Page 37 - Ending... 3 02-01-2018 17:09:34 [INFO] Change time: 37 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 49 - Start 10 02-01-2018 17:09:34 [INFO] 59 Page 46 - End 10 02-01-2018 17:09:34 [INFO] Page 46 - Ending... 10 02-01-2018 17:09:34 [INFO] Change time: 46 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 48 - Start 11 02-01-2018 17:09:34 [INFO] 58 Page 41 - End 11 02-01-2018 17:09:34 [INFO] Page 41 - Ending... 11 02-01-2018 17:09:34 [INFO] Waiting 43 Threads 02-01-2018 17:09:34 [INFO] Change time: 41 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 47 - Start 17 02-01-2018 17:09:34 [INFO] 57 Page 31 - End 17 02-01-2018 17:09:34 [INFO] Page 31 - Ending... 17 02-01-2018 17:09:34 [INFO] Change time: 31 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 46 - Start 10 02-01-2018 17:09:34 [INFO] 56 Page 38 - End 10 02-01-2018 17:09:34 [INFO] Page 38 - Ending... 10 02-01-2018 17:09:34 [INFO] Change time: 38 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 45 - Start 12 02-01-2018 17:09:34 [INFO] 55 Page 33 - End 12 02-01-2018 17:09:34 [INFO] Page 33 - Ending... 12 02-01-2018 17:09:34 [INFO] Change time: 33 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Waiting 45 Threads 02-01-2018 17:09:34 [INFO] Page 43 - Start 7 02-01-2018 17:09:34 [INFO] 54 Page 9 - End 7 02-01-2018 17:09:34 [INFO] Page 9 - Ending... 7 02-01-2018 17:09:34 [INFO] Change time: 9 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Waiting 47 Threads 02-01-2018 17:09:34 [INFO] Page 41 - Start 11 02-01-2018 17:09:34 [INFO] 53 Page 15 - End 11 02-01-2018 17:09:34 [INFO] Page 15 - Ending... 11 02-01-2018 17:09:34 [INFO] Change time: 15 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 39 - Start 9 02-01-2018 17:09:34 [INFO] 52 Page 30 - End 9 02-01-2018 17:09:34 [INFO] Page 30 - Ending... 9 02-01-2018 17:09:34 [INFO] Change time: 30 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Waiting 50 Threads 02-01-2018 17:09:34 [INFO] 51 Page 24 - End 10 02-01-2018 17:09:34 [INFO] Page 24 - Ending... 10 02-01-2018 17:09:34 [INFO] Page 24 - Ending... 10 02-01-2018 17:09:34 [INFO] Page 37 - Start 3 02-01-2018 17:09:34 [INFO] 50 Page 29 - End 3 02-01-2018 17:09:34 [INFO] Page 29 - Ending... 3 02-01-2018 17:09:34 [INFO] Change time: 29 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 33 - Start 12 02-01-2018 17:09:34 [INFO] 48 Page 23 - End 12 02-01-2018 17:09:34 [INFO] Page 23 - Ending... 12 02-01-2018 17:09:34 [INFO] Change time: 24 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Change time: 23 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 31 - Start 17 02-01-2018 17:09:34 [INFO] 47 Page 26 - End 17 02-01-2018 17:09:34 [INFO] Waiting 52 Threads 02-01-2018 17:09:34 [INFO] Page 26 - Ending... 17 02-01-2018 17:09:34 [INFO] Change time: 26 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Page 30 - Start 9 02-01-2018 17:09:34 [INFO] 46 Page 14 - End 9 02-01-2018 17:09:34 [INFO] Page 14 - Ending... 9 02-01-2018 17:09:34 [INFO] Change time: 14 2018-01-02 18:09:34 02-01-2018 17:09:34 [INFO] Waiting 52 Threads 02-01-2018 17:09:33 [INFO] Waiting 53 Threads 02-01-2018 17:09:33 [INFO] Page 29 - Start 3 02-01-2018 17:09:33 [INFO] 45 Page 5 - End 3 02-01-2018 17:09:33 [INFO] Page 5 - Ending... 3 02-01-2018 17:09:33 [INFO] Change time: 5 2018-01-02 18:09:33 02-01-2018 17:09:33 [INFO] Waiting 55 Threads 02-01-2018 17:09:33 [INFO] Page 28 - Start 8 02-01-2018 17:09:33 [INFO] 44 Page 4 - End 8 02-01-2018 17:09:33 [INFO] Page 4 - Ending... 8 02-01-2018 17:09:33 [INFO] Change time: 4 2018-01-02 18:09:33 02-01-2018 17:09:33 [INFO] Page 27 - Start 13 02-01-2018 17:09:33 [INFO] 43 Page 18 - End 13 02-01-2018 17:09:33 [INFO] Page 18 - Ending... 13 02-01-2018 17:09:33 [INFO] Change time: 18 2018-01-02 18:09:33 02-01-2018 17:09:33 [INFO] Page 26 - Start 17 02-01-2018 17:09:33 [INFO] 42 Page 10 - End 17 02-01-2018 17:09:33 [INFO] Page 10 - Ending... 17 02-01-2018 17:09:33 [INFO] Change time: 10 2018-01-02 18:09:33 02-01-2018 17:09:33 [INFO] Page 24 - Start 10 02-01-2018 17:09:33 [INFO] 41 Page 19 - End 10 02-01-2018 17:09:33 [INFO] Page 19 - Ending... 10 02-01-2018 17:09:33 [INFO] Waiting 58 Threads 02-01-2018 17:09:33 [INFO] Change time: 19 2018-01-02 18:09:33 02-01-2018 17:09:33 [INFO] Page 23 - Start 12 02-01-2018 17:09:33 [INFO] 40 Page 11 - End 12 02-01-2018 17:09:33 [INFO] Page 11 - Ending... 12 02-01-2018 17:09:33 [INFO] Change time: 11 2018-01-02 18:09:33 02-01-2018 17:09:33 [INFO] Waiting 60 Threads 02-01-2018 17:09:33 [INFO] Page 19 - Start 10 

Probeer dit eens, het lijkt er erg veel op.

https://helpcenter.websitex5.com/en/post/174983

Heb ik geprobeerd, maar helpt niet. Het probleem blijft hetzelfde. Zodra ik alle foto's rechtstreeks in de preview directory vervang en ook de css documenten die bij de slideshow horen terwijl het programma opgestart is en ik de pagina niet open dan kan ik de site uploaden naar internet en dan staat hij daar goed, dus het probleem ontstaat doordat ik de gallery in de pagina aanklik.

En probeer dan eens een met je ctrl toets de preview te starten. en dan eens kijken of het lukt.

op zich hoef je nooit los bestanden naar folders van x5 te zetten, dit geeft vaak problemen.

Gebruik je ook nog eens ergens custom codes? Wellicht dat die botsen?

In de galery waar de foto's in staan en in de pagina waar de galery in staat, staat geen speciale code, de rest van de pagina's is op dezelfde manier opgemaakt, heb 3 documenten toegevoetgd om het probleem te verduidelijken.

Hier staat het galery bestand in de sitemap

Hier is het bestand geopend

Zodra ik dubbelklik op de galery krijg ik de foutmelding

Best wel raar, is het veel moeite om de galerij opnieuw te maken in een nieuw object?

Wellicht zit er ergens iets raars in.

Ja denk dat ik dat maar ga proberen, probleem is er zitten nogal wat foto's in en ook teksten die moeten dan 1 voor 1 overgekopieerd worden.