An unexpected error while selection was changed on material

The following error will appear when changing custom textures

Material Selection Changed Error

This normally happens due to Corrupted custom textures. Follow the steps below to correct this:

1. Delete the items in root folder C:\ProgramData\20-20 Technologies\Custom materials\Root
   
   
2. Also delete the 2020 tech folders from C:\Users\USERNAME\AppData\Local.
   
   Note: USERNAME above will be your specific User ID which you use to login on PC.
   Ex. If User ID is XYZ then one would delete the folder from: C:\Users\XYZ\AppData\Local.