What sort of glitches you talking about Paul? I haven't noticed anything in particular (except that some little buggy things that annoyed by v3 are gone )
Little things like getting the message "unable to open the Avi" after doing a reference frame creation, not being able to open a bmp when aligning when Reg3 aligns the whole lot with np, not saving settings as previously used. Little niggly things. I found it really didn't like working MAP on Solar images.
Not that it's any help but I don't seem to be able to align solar images no matter what I use! I'm hoping maybe I can learn a few new tricks at Lostock...