Anyone else having this problem?
I noticed a lot of (utterly unhelpful) links online that mention this error message, but NONE OF THEM actually tell you what to do about it.
It started following an update to Creative Cloud that actually installed WHOLE new versions, without removing the old versions.
Ever since then, I have been unable to update ANY application that updated to a new version.
I have uninstalled completely and reinstalled completely
The problem is still there.