My son just pulled up a YouTube on DarkTable a few minutes before I saw this post. He likes it and I might start using it too since there will now be someone else with experience that I can lean on.

I would be interested as well. I have the Adobe Photography Plan and have been using LR for many years. While it is good while it works, I've had more and more problems with it recently. It will quit unexpectedly and then when I open it, it will say it wasn't closed properly and will have to repair the "corrupt" catalog file. Once it does that (not a quick process), sometimes it won't work properly then and I'll have to shut it down and maybe go through that process more than once again. If it does open, then the changes I have made to many of my pictures may not have come back, just as if I hadn't done anything. Today I have been fighting with it remember which photos I have picked and not picked, but all the changes I had done to the picked including crop/straighten, all lighting, etc. none will still be there. All the adjustment sliders will be in the middle. Sometimes the folders that I have created won't show up, but I can easily find them in Explorer, so they still exist. I could go on.......

So, to say the least, I'm frustrated and considering options as well. PS is fine and though I'm not great with it, it seems to work well.

Thanks, I'll do that if I get to sky replacement. I may do it anyway for learning the technique.

Thanks for your help. I may try some sky replacement, but have a few other things to try first.

I think part of the problem, point out by others, was the fact that I used a CPL filter or at least I think that enhanced the problem.

All seven of the images I used to make the pano were shot at 200 MM and shot it in portrait position.

Yes, I'm considering trying a sky replacement, it will be the first time I've attempted that. Also trying AutoPano Giga as someone suggested. First attempt at that looks some better, but I still need to go back into the individual images and try turning off the lens correction and see if that helps.

Thanks, I'll try daytime K, but while I've considered the sky replacement, (never done it before), I didn't think about searching for a sky from possibly the same area. Again, I've never attempted a sky replacement either though.

Thanks, that's what I intend to do. I appreciate all those who commented and helped to identify the problem for future shots as well as hopefully make this shot still usable.

Thanks for the correction of section. I don't believe it is entirely a dusty issue though. I've shot many panos, but never had this issue. I think that I was using a CPL and know I shot at 200 mm.

While there are some dust issues in the form of spots that I can take care of, that wasn't causing the vignette effect. The original images were shot at 200 mm.

I'll have to take a look at AutoGiga Pano. Thanks

LR did recognize that it was using that lens and corrected. I haven't tried turning the auto correction off to see if it changes though. I'll have to remember to NOT use a filter when shooting pans in general.

Thanks

Trying to remember, but if I used anything, it would have been a CPL. I'm wondering if I were to take each image and try to use the vignette tool to remove vignette that I don't even see, if when stitching they would be better.

Yes, I realized that the first time and there wasn't an error, only the message that the image was too large. After hand palming, I reduced the image to about 14 MB and that is when the internal error arose. The image I have attached here is only about 6 MB, much larger and it only gives the internal error message. The other image I've tried to post is 5.22 MB and here is the error message I get (ends with a comma).

"There was an internal problem processing your attachment. Please go back and try again. If the problem persists, then please contact the administration,"