To delete an "Edit in" preset from within the Lightroom program-
1. Open the Preferences [CTRL+,] and External editing tab,
2. In the 'Additional External Editor' -"Preset" text box, click the drop-down menu and choose the preset you want to delete.
3. Once again, click the "Preset" drop-down menu and choose "Delete Preset....chosen " from the menu.
Thank you for your quick response.
Unfortunately, the instructions will help only partially. I have the contents of the folder deleted. Some settings are no longer displayed in the menu.
I tried in presets to delete the programs, but it has brought unfortunately nothing. The setting does not change.
It is specific to the program "Blow up 3" from Alien Skin. I once installed a tryout version and later uninstalled. But somewhere which is still there in Lightroom.
Have you uninstalled that program ?
Yes, I have uninstalled the program.
Can anything more be found on the hard drive
Thanks for help
Try to find blow up/alien in your complete hard drive using Operating system's search option.
If you find anything delete that.