65. I made a style with the StyleMaker that uses the bar mask feature, and some bars don't play or only play drums.

You should always have a 'generic' pattern as the first pattern of an instrument in a style. By generic, we mean a pattern with no masks on it, that will work for any chord. You've likely only created patterns with masks on them (for example, only play on a m7 chord, etc) and the style can't find any patterns to play in certain situations.

Alyssa - PG Music