would malware bytes anti malware cause that to happen?
It is possible.
I just remembered something else which can cause it. If you are running the Beta from your SSD, and not your hard drive, your SSD may have a firmware error where it cannot handle quick file deletions and changes.
Or if you copied the skin files from AH2 to AH3 and did not check the file permissions, it could cause it. None of the skins from AH2 should be copied over to the AH3 folder. All the skins had to be upgraded to be used in AH3.