quasicrystal666 wrote:THE SOLUTION IS MOST PROBABLY HERE IN THIS POST! READ!
Like many of you, I'd been using this program almost flawlessly for weeks or months, but suddenly one day I couldn't play any video with subtitles, since I'd get that dreaded message "This content cannot be played".
1. I didn't have AviSynth/Mencoder activated, but I'd disable it since many people in this thread have done it.
2. I searched in Windows for *.cache-3. It found 2-3 files, I deleted them, but that still didn't solve my problem.
3. I closed PMS and then I opened CCleaner (a great little program everyone should have) and I noticed a section under "System" named "Font Cache". Select it and run the cleaner. I opened PMS again and voila, I could play my videos again. Remember, keep PMS closed while doing it. Just to be sure, I'd tick on all options under "System" and clean them.
Hope it helps!
I followed this advice and it works perfectly now.