Thanks to the both of you for your fast replies.
I am aware of that this has nothing to do with dcamprof, but with Unix. I just don't know where else I should look for help in this case. -
Rather than entering the Path manually, I use ShellHere, which can be seen in the top left of the screen shot I included. You open a folder, then click ShellHere in the folder's menu bar, and a Terminal window is opened "in" that folder.
This has always worked for me. But now I can see that it returns "-bash: !/0-bin: event not found"
(The name of the folder "in" which I am supposed to be is "0-bin+ref dcamprof 1.0.4")
So it looked like ShellHere did not worke this time.
'pwd', entered in the Terminal without anything else, shows me that I am in my Home folder.
MuCommander requires to install an old version of Java which I don't feel safe to do.
Installing a fresh copy of ShellHere, deleting it's plist an restarting the Mac didn't help. Nor did copying the Path that ShellHere displayed and entering it manually in the Terminal. Then I dragged the folder, which is on a disk other than the startup volume, to the Desktop - and that worked!
And finally I figured out what was wrong: The name of an enclosing folder contained a "!" !
Sorry I bothered you with this.
I'll soon get back with a question that HAS to do with dcamprof ;-)