Can you please attach a link to the fix? (Do you mean this -> https://obsproject.com/forum/threads/obs-crashing-after-update-to-31-0-0.182468/post-667062 ? Because it didn't work for me.The OP of this thread already found the issue and solved it. I recommend you to read it.
If you have an issue open your own thread adding the log file and crash report from the moment the crash happens. Someone will look at it.
Thanks.