Hi Thomas and Merwan,
I think Cancel button needs some comments:
1 - I think Transmutr Cancels too easily. A message should popup for us to be warned, at least if some stuff has been done to the file.
2 - I think cancel could be called New. I was trying to Transmutr a new file and didn’t find how. I actually opened a new transmutr instance before discovering that cancel was what I wanted.