Thanks for the quick reply! I suspected it was just a bug, but had my fingers crossed.
Any idea roughly when "soon" is? weeks, months, years? I don't mean to pressure you, it's simply that before too long I'll run out of time and need to hack it myself some other way.
I'm trying to split a .flc into a bunch of .pngs, but the option to "Extract movie frames..." is greyed out in the Tools menu. I can step through the frames one at a time and save them, so there doesn't seem to be any trouble with the .flc or XnView...