Launcher Crashing on startup; Serialization Error

Hello,
I’m working on a project for a long time but it started to crash on startup via serialization error. I’ve searched other posts having same problem but I already tried to uninstall UE4 and reinstall it again with a newer version. It did not work out for me. I attached the log file of crash. I’d appreciate if you could help me on this.
Thank you for your time already.
link text

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks

Hello Jeff,
Thanks for your reply. But I’ve been trying report the issue via the form you’ve sent for the last 2 days. When I hit submit button, the page goes into a never ending loading stage. I really need to get back to work on this project file as soon as possible. Is there anything else I can do?