Visionare crash after open way system tab

Strange thing is happening to me. If i open way system tab, the whole software crash. I got this error.

Please, what can be wrong?

What version do you have ? It's a problem with our underlying gui library, that often creates this kind of errors, but not always at the same position. What happes if you press cancel?

it says visionare stop working and it crash. This error i get just sometimes, else it just crash.
But actually it works from the beginning, its happening after visionare is running a while. So i can do all i need, but i'm worried to this not do some mess.

Visionare 4 RC, windows 8

VS kept crashing on me regularly when I opened up the way system tab after using action areas. It happened quite a lot. The action area part always seemed to freeze for a while whenever I first accessed it too & would make vs non-responsive for at least 30 seconds each time.

I'm on a build from a few weeks back, I think.