Data not uploading?
Save file somehow corrupt in cloud?
Some other random bulcrap that you can't explain but know rpg maker workshop is at fault?

Follow theses steps to fix all your problems:

STEP ONE: Open Properties.

STEP TWO: Click the Beta Tab.

STEP THREE: Select "Original-Non-workshop version"

STEP 4: Save your settings.

AND THERE YOU HAVE IT! ALL YOUR RPG MAKER ISSUES ARE SOLVED!(Well ones dealing with the program at least, don't ask me how to fix that nil class error on script line 456...)

And before you all start screaming "this isn't a solution!" let me stop you there. Until further notice you all should consider RPG Maker workshop "UNSTABLE" and use at your own risk.

This solution is the ONLY way to fix 99% of the problems that occur when using the workshop version of rpg maker vx ace.

So if you aren't willing to follow my solution, then don't come whining to the forums when your file disappears off the steam cloud or your project data becomes corrupt. Because every person whose encountered these kinds of misfortines know this:

Enterbrain won't do ♥♥♥♥ to fix this anytime soon.