Hi Mike,
Unless I am mistaken, even if Liberator did work under 64-bit PS, it will not open QHY8 OSC FITS images. Not as colour anyway.
RAW QHY8 FITS images are not compliant FITS images. The colour is represented in a Bayer matrix and as there is no way to specify the bayer transformation in a FITS image, therefore they are not FITS compliant and not handled by any compliant FITS reader.
FITSPlug (
http://fitsplug.com) will work with PS 64, but it will only open OSC images as monochrome, because of this inability to determine the difference between a non-OSC image and an OSC image requiring a bayer transformation, using information in the FITS header.
If I'm wrong about Liberator and bayer matrices, please let me know...it will be news to me!