Stepchart creation failed!

invalid SM file: measure with a strange number of notes (11 notes at line 51), notes are: array(11) { [0]=> string(4) "0100" [1]=> string(4) "1000" [2]=> string(4) "0001" [3]=> string(4) "0010" [4]=> string(4) "0001" [5]=> string(4) "1000" [6]=> string(4) "0010" [7]=> string(4) "1000" [8]=> string(4) "0001" [9]=> string(4) "0100" [10]=> string(4) "0001" }