Stepchart creation failed!

invalid SM file: measure with a strange number of notes (50 notes at line 855), notes are: array(50) { [0]=> string(4) "0000" [1]=> string(4) "0000" [2]=> string(4) "0000" [3]=> string(4) "0000" [4]=> string(4) "0000" [5]=> string(4) "0000" [6]=> string(4) "0000" [7]=> string(4) "0000" [8]=> string(4) "0000" [9]=> string(4) "0000" [10]=> string(4) "0000" [11]=> string(4) "0000" [12]=> string(4) "0000" [13]=> string(4) "0000" [14]=> string(4) "0000" [15]=> string(4) "0000" [16]=> string(4) "0000" [17]=> string(4) "0000" [18]=> string(4) "0000" [19]=> string(4) "0000" [20]=> string(4) "0000" [21]=> string(4) "0000" [22]=> string(4) "0000" [23]=> string(4) "0000" [24]=> string(4) "0000" [25]=> string(4) "0000" [26]=> string(4) "0000" [27]=> string(4) "0000" [28]=> string(4) "0000" [29]=> string(4) "0000" [30]=> string(4) "0000" [31]=> string(4) "0000" [32]=> string(4) "0000" [33]=> string(4) "0000" [34]=> string(4) "0000" [35]=> string(4) "0000" [36]=> string(4) "0000" [37]=> string(4) "0000" [38]=> string(4) "0000" [39]=> string(4) "0000" [40]=> string(4) "0000" [41]=> string(4) "0000" [42]=> string(4) "0000" [43]=> string(4) "0000" [44]=> string(4) "0000" [45]=> string(4) "0000" [46]=> string(4) "0000" [47]=> string(4) "0000" [48]=> string(4) "0000" [49]=> string(4) "0330" }