What this error typically means is that the code is trying to access a vector or matrix element using an index that lies outside the dimensions of the matrix. For example, if Z is a 2x2 matrix, then Z(3,1) will throw this error.
When your code raises this error message, are you given any other information as to the line number that corresponds to this error?
I noticed that the text string for the format is
1280*720
Should this be
1280x720
instead? i.e with an x instead of the asterisk?
