Hello,
maybe a little late to answer, but it can help.
A colleague of mine had the same problem.
After reinstalling Studio Pro, the errors disappeared.
We could not identify the source of the problem, but at least there is a workaround.
Have a nice day
Patrick
This happened for me when I was using a shared network drive.
The solution I used was to map the network drive to a named letter drive, in my case M:. You then need to reopen the project from the lettered drive, and it should build successfully.
Hope this helps.
Also a late answer:
This happens indeed when you use the project via a shared network drive in combination with any usage of Javasacript actions.
However I have used JS actions and a shared network project in a project without issues. So I guess that at some point in later Studio Pro versions, this is fixed.