Thanks for reporting it.
Which one is the working version, @anon51466201?
For example, do you try to save from C: to D:?
Can I roll the IDE version back or something?
I am unaware of a rollback feature in the IDE, but you can always download an earlier version from the release page. However, it would be valuable to figure out the problem first. Could you please help us with the log files? If yes, please reference this comment on how to get the IDE2 log files on Windows. If you need assistance, please ask. Thanks!