I can stay around on the wallet a few seconds but I always get the same error: Fatal error... the wallet then proceeds to close itself.
I get the same error every time. Let me know if you have the same error or if you have a fix.
You'll need to look in your Bitcoin Core "data directory" (the same directory that has you wallet.dat), and find the "debug.log" file... open this in a text editor and scroll all the way to the end. There you should seem some "obvious" error messages as to why Bitcoin Core is crashing.
Note: if you're on Windows, there might be something useful in the "Event Viewer" (look under "Windows Logs -> Application) and see if you can find anything related to "bitcoin-qt.exe"