Instant Reverse Unsuccessful

I try to open C++ files as recommended here
but after some minutes of waiting, the process finishes with a message “Instant Reverse Unsuccessful” (screen copy of the error message is here )

I checked what this message recommends, but nothing chages.
Here is also a content of a Temporary folder of the process:
The error occurs even if I run VP as administrator, so the permission to a folder is not the case.

Pls recommend what to do next.

Also, I cannot register on this forum )) some java error message occurs.