I've rarely had any problems over the past decade that I have used shopping cart, but the recent update has through me for a loop.  My FTP exports have always been speedy and complete until this week.  I check with my host and sent the problems I'm experienceing to him.   He suggested changing the FTP options, which finally allowed me to upload.  I was finally able to upload, but the shopping cart does not work.  futher attempts to export are timing out.  I went so far as to delete 3 catagories to see if that would help.   This is a very bad time of the year for my Website's shopping cart not to function correctly.  I'm up at 4am trying to export to see if helps but it didn't.