Hi Tom,
Sorry - posting copies of PixInsight 'anywhere' in the public domain contravenes your PI license, and would be very much frowned upon by Juan and the PI Team.
Further, think about 'how' you got your copy of PixInsight in the first place - all copies (even the free trial versions) are only available by secure, authorised, acess to a repositiry allocated to an individual
only. And all PixInsight software is therefore traceable, in perpetuity, back to that original user.
So, it would be highly inadvisable to transfer your code to anyone else, by any means, for any reason, at any time (now, or in the future, free or otherwise) - Juan is a really nice guy,
until his licensing conditions are broken
That said, you are obviously having issues - and this is the best place to raise them. Perhaps the better thing to do is for you to post one of your troublesome FITS files on the likes of Dropbox, and then see if others can open them.