HappyDog’s MouseTrap

first you should delete Documents\My Games\KillingFloor2

then start the game and then stop the game

and do this................
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Killing Floor 2 players are reporting that they are encountering the Bugsplat error while playing the game. The fix for this error is quite simple. Navigate to “Documents\My Games\KillingFloor2\KFGame\Config” and open the KFEngine.ini file. Look for the following in the config file and set the value for all of them to 0.

[Core.System]

MaxObjectsNotConsideredByGC=0

SizeOfPermanentObjectPool=0

StaleCacheDays=0

MaxStaleCacheSize=0

MaxOverallCacheSize=0

PackageSizeSoftLimit=0

Save the changes and the Bugsplat Error will be fixed.
it basicly resets everything you should do it on every kf2 update
you reset by deleting the folder then set the ini stuff
all people who did that have no problems anymore
you need to start the game one time aafter deleting so it makes the ini files
then chnage the inis
and done
invisible boss and other stuff fixed