I have never seen that error, you would do best by contacting Smartsound directly. SS customer service is outstanding, but only when they are awake. Based in California, so West Coast time.
Email or phone, easy to find on the web.
Open the Smartsound interface thru PD,
next click on the word SMARTSOUND,
next click on BROWSE FOLDERS
See those folders? Copy the lot of 'em, and do it every time you buy new music to save your music library. HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
Nvidia GTX 960(4GB)/16GB DDR3/
Canon Vixia HV30/HF-M40/HF-M41/HF-G20/Olympus E-PL5.
Tape capture using 6 VCR, TBC-1000, Elite BVP4+, Sony D8 camcorder with TBC.
https://www.facebook.com/BarryAFTT

Yes I have a feeling its on the SS side.

May have to do with a Library Pointer. I have my music split up into directories in case I need to back them up. Good chance someplace a library pointer gets corrupt and the house collapses.

I reinstalled again and all is well.

I am getting good at the re-installation. At least reinstalling is fast for both Sonicfire and PD9.

Dave - you said:
May have to do with a Library Pointer. I have my music split up into directories in case I need to back them up. Good chance someplace a library pointer gets corrupt and the house collapses.

Barry mentioned making a backup copy of the folder containing the Sound Files (.sds files)

When you say you have the files split into directories, you don't mean you've put them in sub-folders within C:\ProgramData\SmartSound Software Inc\Sound Files, do you? If so, that could well be causing the problem.

To function, SS needs those .sds files stored loose in that folder & the libraries (.sdx files) to be in C:\ProgramData\SmartSound Software Inc\Libraries - without sub-folders.

Barry, I'm certain, was talking about making a copy of the whole folder and storing it in a completely different directory... an external HD for example.

Perhaps I've misread your statement.

Cheers - Tony

P.S. Edited to correct flaws in forum formatting

YOU guys are on to something here.

I have my SS Libraries of sounds on a whole separate HD in a Directory structure or folders so each folder can be backed up easily.

I need to keep my C drive as small as possible so I can keep Acronis True Image from making a giant image backup. I have always kept as little as possible on my C drives and kept the C partition as small as I can. I like keeping data on my other partitions.

Sonicfire allow you in TOOLS to specify and add search & install folders and manually add albums and its not perfect. These are the folders I have put on a separate partition. So when I insert a SS CD I can tell it to copy that CD to the directory I pick as the sound installation directory. I like to keep each directory under 4.4 GB so I can back them up to a DVD and I'm glad I did this as it eases re-installation.

One of my SS disks doesn't install automatically and I have to manually put it on. If I do this before I install PD9 I'm OK. But if I manually install a SS disk after installing PD9, I think that's where the issue is.

I'll see if I can get a hold of SS support for the exact error message.

Everything is working good so far as long as I don't manually or maybe automatically install any more SS CD's. I leaning to manual installtion as being the problem.

For some reason my CD/DVD player references the last CD/DVD that was put in it while the present CD/DVD is in it and this causes a hiccup with SS installation. As once SS aborts the copy, it wont detect that CD anymore even if I hit F5 in explorer to refresh the directory.
This then forces me to copy the CD manually. And this could be an issue with POWERDESK that I use that has replaced Windows Explorer. Powerdesk does not respond to F5 refresh of the folder tree to well.

Sorry for bringing a skeleton out of the closet but I have solved this same error.

When separating a smartsound collection into separate folders to keep them organized and small and easy to safely back up on DVD's, it is possible the last folder setup was designated as the destination folder and not changed back to the original destination folder

Once the destination folder is changed back to Application Data\Smartsound Software Inc, the error is solved.

That's the destination folder you can't change (the one in Application Data).

Had the error message spelled out the whole path, it would have been more obvious.