Hope this problem got solved. My apologies. I totally missed seeing this thread update. Not sure, but Notepad++ is open source license and free. As far as the error message, couldn't tell without seeing more. I'd suggest try opening it in poser, and saving the morph into your library, then open a new scene, try applying the morph and see if it still gives the error message.

The dust settled, thinking "what a fine home, at least for now" not realizing that doom would soon be coming in the form of a vacuum cleaner.