Does not load the mission editor

Kr@Chum=GCF

Hi, I have a problem with the mission editor, I have created a map and now the application has not started, I have tried all the possible solutions. Any suggestions, Thanks for the reply.

={101st}=Muzza455

try a pc searchfor .upk files . 7 or 8 hundred of them . select all and delete . then verify game cache in steam library . it will then download new .upk files . then re open the editor . post what happens and if there are any error messages.

Kr@Chum=GCF

Good morning, thank you very much for helping me.
It has worked correctly.
For: ={101st}=Muzza455

={101st}=Muzza455

Kr@Chum=GCF

https://steamcommunity.com/profiles/76561198090570931/