Everytime I try and enter "settings" the client crashes.

Hello all!

A few weeks ago I had to access settings while a meeting was going on. The client shut down, I restarted it and kept on with the reunion. 

After this I could never again access settings. Everytime I click "settings" the client crashes. The software has been updated since then and the problem persists. 

Does anybody know about a solution? Any help is appreciated.

Thanks.