basically you need to do something with folder content that forces the code to refresh the list of profiles, even may be creating some dummy file in that folder... for example you might have some daemon in the background running creating/deleting a file there every so many seconds... hence the ACR code is always fooled... crude, but shall work
Thanks again. With my version of ACR 5.4, running under PSE 6, changing the folder content with an X3F file open didn't add anything to the Camera Profile drop-down. I'll wait and see what Eric Chan comes up with. Not being a Pro, I almost never use profiles - preferring to convert as neutral as possible and do the development elsewhere.
The only reason I got into the subject at was that a Sigma SD9 was turning reds orange whereas a Nikon D50 did not. At one point, I discovered the Adobe raw to DNG converter and the DNG profile editor thought I could "just" make a profile for that lighting situation and all would be well. So, with the thought of workflow including a raw-to-DNG conversion, opening in ACR, applying the profile, etc. ad naus, I went down a different path and forgot it until yesterday.
I should stress that this is not a major problem to be solved by by forum members and, if Eric tells me why it happens, I will perfectly happy.
Cheers,