On July 20, 2021 at 18:16, shokwaverider said...
Just keep the "Exe" files you have, update it and then copy the older EXE's into the program directory, all good.
Did you replace all the EXE files?
Did you try it with just replacing the CCP.EXE file? That is a tiny file and would be relatively easy to help out those that got screwed and don't have a prior backup available.
Did you need to replace any of the DLL files with old versions?
Note: I haven't updated since I learned of the problem, so I haven't been locked out nor have I tried the fix myself. Currently on v4.0.1106.6.