I am also having a similar problem! Whenever I try to open the iDrive application to try and sync or backup files, it either takes up to an hour to "calculate" the files or freezes. I have downloaded the most recent iDrive application on my computer today but it is still the same.
None of my files have been backed up (since I reinstalled it).
I can't even send an error report because the application freezes so I can't click anything! Please do something about this!