@Alex1891 You can use any plugin you want with the widescreen patch, but you have to get the lambchops plugin loader AKA "LC.DLL". You can find it in the first post inside of the "lobby_map.zip"
Or here the direct link to the file:
https://forum.war2.ru/index.php?action=dlattach;topic=6461.0;attach=4520I'll add support for the saveloadFixByMistral on next update though, that way it will work without lc.dll as well