I found this error in the mentioned log file, is this related?
warning: Error running OnRelease script in <deleted object>: ...mdata\faforever\gamedata\lua.nx2\lua\maui\button.lua(84): Game object has been destroyed
stack traceback:
[C]: in function `Play'
...mdata\faforever\gamedata\lua.nx2\lua\maui\button.lua(84): in function <...mdata\faforever\gamedata\lua.nx2\lua\maui\button.lua:78>