MMH5.5 - Heroes of Might and Magic 5.5

Hello everyone. I have a problem; I can't launch Heroes 5.5. When I start it, I get an error: "entry point to procedure _GrannyEvaluateCurveAtT@20".
Most sources say that I need to download the Granny files and put them in the Sys64 folder, but that didn't work.
Maybe it's a problem with my system; maybe I should reinstall Windows altogether?