UPDATE FROM MABULA
I have had a very rough 2 months unfortunately health wise. I was struck 3x in a row with bacterial infections. The second infection occurred  after a routine hospital checkup and I became very sick. I had to rest and take a lot of antibiotics. Once I was recovering and restarting work 1 month ago, I again became sick. The infection was not yet gone, so even more antibiotics and rest was needed. Needless to say, it took a lot of my energy and I needed a lot of rest.
Finally, the infection is really gone and my energy is coming back step-by-step now and I have started work again. I am terribly sorry to have kept you waiting for support. I will address all outstanding questions and e-mails step-by step and will be on the forum daily from today.
APP 2.0.0-beta47 will come soon as well, a lot of work was already completed before I became very ill, so the release is also nearly ready for you. Beta47 will be much faster actually. Many workflows will be more than 2x faster, mosaics can even be 10x faster than before because registration really received a major boost... all compared to beta46. Â Before I release it, I will make sure that everything is working properly and then I will release it.
I have 2 mosaics that I integrated previously. They look almost identical as everything was the exact same, just shot on different nights. When I got to stack these two fit files though I get the following results.
I've tried stacking them using everything as default, I've tried stacking them using the mosaic option. I've adjusted the scale start and stop, used dynamic distortion correction, unchecked same camera and optics, I've used quads and triangles for the pattern recognition descriptors and various other options. I continue to get strange circle looking results. Is there something that I'm missing, or overlooking?
What's even stranger (to me) is if I add in a 3rd mosaic session it integrates without any issues. When I don't include that session, I get the strange results. The 3rd session is terrible data, which is why I was trying to stack the other 2 and not include the 3rd.
For what it's worth, here are the screenshots of the 2 images I'm trying to stack
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It's best to create a mosaic from separate panels, not 2 mosaics entirely, I'm also not sure that will work correctly. You could try to switch off dynamic distortion correction..
