I just started using PlayOnLinux last night and tried to get WoT to work. Did a fully clean install of Mint 17 and PlayOnLinux using Wine 1.7.22. Everything is patched and updated. I am using Nvidia latest stable driver on an Intel I7/920 platform with a 760 GTX and 6GB RAM. I'm also seeing the same crash after logging in. As soon as it starts to enter the garage it crashes.
Sorry, I don't have the debuger info. I have two systems and my gaming box is usually running windows as it is now. I was building a new linux platform on it and don't have it booted right now to test it out.