I am using B4R v4.00 with Arduino IDE v2.0
I am having the same problem.
i am reinstalling B4r. I try to do a board select and the error pops up.
[IDE message - 1:32:00]
An error occurred.
An exception occurred during the operation, making the result invalid. Check InnerException for exception details.
Shalom,
Attached is a step by step Path Configuration "gif"
I don't know what is going on.
These step are repeatable, it changes the path every-time????
I have uninstalled B4r and the other files several times.
Same results.
Shalom, Lee