-:2: frame offset of -4 bytes, must be between 0 and 240
-:3: negative offset not allowed
-:5: negative offset not allowed
-:6: negative offset not allowed
-:11: frame offset of 248 bytes, must be between 0 and 240
-:17: frame offset of 236 is not a multiple of 16
-:18: offset of 124 is not a multiple of 8
-:20: offset of 1032 is not a multiple of 16
-:21: offset of 1028 is not a multiple of 8