'NoneType' object has no attribute 'windowFlags'

[TLATER]

I recently updated my arch machine and webmacs has refused to start since, giving the error message in the title of the issue.

Unlike #75 and #36 this is neither resolved by a reboot to allow nvidia drivers to catch up (not that this machine runs nvidia), nor by removing .webmacs.

[spiderbit]

same problem under nixos