PDF negative displays

I use many PDF files in forScore for music. After uodating the iOS4 the PDFs generated from my printer scanner display as negatives (White on Black) TRied a file on iBooks and it does the same thing. PDF created from CutePDF Writer work file as do Exports from my word processor. Unfortunately over 200 of my scores are impossible to use. Their response follows, NOTE: I have not been a Beta tester.
" This does appear to be a known issue with iOS 4.3 and PDF files using a CYMK color profile rather than RGB. This might sound like a crazy question, but did you ever use any of the beta versions of iOS 4.3? The confirmed cases of this bug that we've seen in the developer forums all relate to having installed one of the betas, even if those people later upgraded to the release version. In those cases, a fresh install was the only way to fix it. Otherwise, we'll see if there's any quick way to convert CYMK files over to RGB so that you can have a potential workaround until Apple figures this out. Sorry we don't have better news!
Sincerely,
MGS Development

I am having the same issue with my pdf scanned music files. I use pdf sheet music reader to read music pages that I scanned in black and white not CYMK or RGB. They were fine until I updated to iOS 4.3. I also tried opening them in good reader and ibooks. No luck. I also never used beta versions either. Any luck finding out an answer to your problem?

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