thank you very much for answering so quickly. I really appreciate that.
Yes, I have created a folder named „RawTherapee“ in the Applications Folder. After double clicking the .dmg-file I have copied all the documents into the new RT-folder.
Double clicking the RT app shows the whole security stuff: No verified developer etc. No workaround worked.
Arrrrggghh: After copying only the RT application file directly into the applications folder, RT opens without a problem! Thank you, Andy, for you screenshots! +++
Honestly I didn’t know that there are two RT apps (RT and RT2). I use the standard app, which should be RT 5.8 for Mac.
Until RT 5.7 I have put all the documents including the app into a separate folder in the applications folder and RT opened without problems. Has this changed in 5.8?
Thank you all for your support. Little mistake, big effect. Now I’m really happy, as this unsolved problem has kept me busy for several weeks now.
Generally RT runs very stable on my Mac. In my eyes, RT is an extremely powerful tool.
All the best and thank you again