With this new update I've started getting this error when I try to clear the Rows/Cols field. After the error shows I have to restart the tool. My current workaround is to put the number of rows I want without deleting the 1 that comes by default

Such a stupid error on my part, argh.  Anyhow, thanks for reporting this!  I've fixed the problem, please download the update 1.7.1.

It's working like a charm now. Thanks for the quick resolution!