Mods Making KSP Crash

[UnbeltedLyric38]

I just recently downloaded kerbal engineer redux for my modded version of ksp and now that I have installed the mod none of my ksp games work on my computer even a completely ksp different game with different mods.  I uninstalled engineer redux and as long as there is a mod in the game files even just mech jeb it makes the game crash while loading.  I removed any threats that malware bytes detected and it is still crashing.  It works perfectly without any mods.  The crash report says that mono.dll caused an access violation. Also I don't know if this helps or not but every time it crashes the loading bar on the bottom is at loading asset bundle definitions.  If you know the solution for this please comment it. I was thinking about factory resetting the computer but I want to do something else. 

[Kerbal101]

Go to your GameData folder.

Make sure that "ModuleManager" DLL file is present only once, and its the highest version.

Delete all other/older clones.

If it continues, make sure that there is no ModuleManager DLL file inside the subfolders in GameData.