Stepchart creation failed!

invalid SM file: measure with a strange number of notes (11 notes at line 1504), notes are: array(11) { [0]=> string(4) "0000" [1]=> string(4) "0000" [2]=> string(4) "1000" [3]=> string(4) "0000" [4]=> string(4) "0000" [5]=> string(4) "0100" [6]=> string(4) "0000" [7]=> string(4) "0000" [8]=> string(4) "0010" [9]=> string(4) "0000" [10]=> string(4) "0002" }