unknown characters in the beginning of the file
@Wiineri, @h-, thx 4 ideas and fast response.
I thought that can be the reason of such a start sequence in file,
checked encoding and (yesss!) it was UTF-8 encoding feature.
I just decoded source file into ANSI, now all works just fine.
P.S. Source file is not worth to see - fat, indigestible, spaghetti-code