I have been using both desktop and iphone apps since the launch and just starting having problems last night. I started getting the "No root transactions" message after and iPhone app crash. I was able to change my sync path and get the data off the phone and back onto iDisk.

The new clue was when I attempted to delete the old OmniFocus file I get the message "OmniMailMessageServiceEnabler" is still using the file. Not sure if that might be the source of the corruption (reporting a crash).

Steve