P: Photoshop 23.0 - cannot open TIF files, generated in other programs

Apparently there are some who have seen issues with PS2022 (v23.0) not opening TIFF files created in Deep Sky Stacker, and not simply having issues with files saved from Starnet++.  I have seen no issues with Deep Sky Stacker, using the default 32-bit/ch uncompressed TIFF file (FITS is an option, but is not a file format normally usable in Photoshop, thus the choice to use TIFF) that is automatically saved upon completion of stacking.  Reading the FAQs for DSS, I learned that 32-bit/ch TIFF files may be saved in a Rational or Integer type, and the author of DSS stated that rational must be used for Photoshop.  Regardless, I resaved the default file to a 32-bit/ch file for both data types, and again PS2022 successfully opened them both, so it seems the DSS FAQ is outdated and Photoshop can open 32-bit TIFFs of either data type.  I proceeded on with each file to process them in Starnet++ under the following test cases:

1. From PS2022, save the original DSS 32-bit/ch Rational TIFF as a flattened file with a save option for 16-bits/channel and repeat, for each of the Uncompressed, LZW Compressed, and ZIP Compressed options.
2. Repeat the same but convert via Image > Mode > 16 bits/ch before performing the save...I expect this is the same as a mode change during a save but uncertain, so this was done.
   3. & 4. Repeat the prior two test cases but for the DSS 32-bit/ch Rational TIFF source file.
   
   These test cases yielded 12 files for processing with Starnet++, which requires a 16-bit/ch TIFF file as input.  All 12 files were successfully processed and the resulting files opened in Photshop 2022, but all 12 files failed to open, the error being the same "not the right kind of document" message.
   
   For myself, Starnet++ is the only application I use that produces a TIFF file that prior to Photoshop 2022, Photoshop could open the file without an issue.  As it seems the problem may apply to a few select other applications, such as ColorChecker24 or FotoProsto (presumably the OP's applications), and reportedly even Deep Sky Stacker for some users, then it certainly seems the root cause of the problem has occurred in Photoshop 2022 itself.

I'm having the same problem after updating yesterday to version 23. After enlarging images using On1 and saving tifs, they won't open in PS (getting a message that it "isn't the right kind of document). Previously processed and saved tifs using the same program (On1) open fine.

I'm having the same issue with Tifs produced by DeepSkyStacker. 
I don't expect to have to use workarounds when paying a subscription Adobe, please can you rectify the problem. 
Thankyou.

Like wise same problem .tif files opened yesterday not opening today after upgrade to ps23

old TarantulastarlessO.tif

any long term solutions that dont involve resaving the image elsewhere?

Having the same issue, Deep Sky Stacker is the program that created the 16bit tif. Althpough I'm thinking this is a bigger issue, and not with the program that made the tif. 10-30 Flaming Star Nebula Stack.TIF

Hi, thanks. I did exactly that and was then able open the starless file. But then I was unable to "apply" the starless image to the original...

Open the starless tif file from StarNet++ with Lightroom Classic and save it back as tif file and you can open it back in Photoshop.

I have exactly the same problem and error message when trying to open files processed by starnet++. This worked fine pre PS 23.0. Starnet++ is a trusted software widely used by the astrophotography community.

I have encountered the same problem described here, but similar to others in this thread, the TIFF files that Photoshop 23.0 cannot open are produced as output from an astrophotography image processing application called Starnet++.  In essence, the workflow from original file to conflicting file is Deep Sky Stacker 32-bit/ch TIFF  > Photoshop to edit and save a 16-bit/ch flattened TIFF > Starnet++ to process and output a starless image also in 16-bit/ch TIFF > Photshop file open failure.  I provide a more detailed description, related files inclusive of resaved copies that were opened successfully in Lightroom Classic, ThumbsPlus 10, and Luminar 4, and a video illustrating the workflow in a folder that may be accessed at PS2022-v23-astroTIFFfail. Hopefully this will be of help to Adobe in a quick resolution of the problem.

@Anthonius92 yes that works thank you