[TomFF]

I don't know if this is relevant, but I also run 3 different versions (modded ones) of IL-2.
2x HSFX4.11 and one UP 2.1 + 2 backups-maybe the problem appears only when switching between
UP and HSFX in the single UP 2.1 install. (?).

I run 3 installs and switch between them and haven't had issues so far.

Tom