Is there anyway to make Mugen 1.0 Compatible chars compatible to WinMugen?
depends on which 1.0 version the char is coded. you see, if chars are coded to work on those crappy RC versions of 1.0, it has a lot of codes that are not compatible with the winmugen.
but winmugen to FINAL 1.0 version and vice versa is ok and almost no drastic changes http://elecbyte.com/wiki/index.php/Updating_to_1.0 that link is for FINAL version of 1.0 also those rules for converting arent always working, especially screenpacks, i tried that for motifs but didnt worked so i asked my motif expert friend to convert a motif to 1.0 for me
actually i read your post again, i havent tried a char for 1.0 in winmugen, but there should be errors as well. if its a winmugen char played in 1.0, more chances of having errors
note RC means release candidate. its like another way by elecbyte of calling an alpha or beta version
personally, i code chars and i dont change anything and my chars work in winmugen and 1.0 (final)