ogm files quit working

[Prospero424]

Hey guys, I am having some trouble playing OGM files. They worked fine for a while, worked with all of my players, now the only player that will even try to play them is ATi File Player, and it crashes a few seconds after loading the file. When I tried reinstalling the Ogg filters, the installer reports:

Error opening file for writing:
"C:\WIndows\System32\ogg.dll"
vorbis.dll
vorbisenc.dll
OggDS.dll
Hit abort to abort installation,
retry to retry writing the file, or
ignore to skip this file

I tried deleting the old files manually, but Windows XP says that they are in use, and will not let me edit them or delete them. So basically, I can't even update the Ogg filters, much less fix the problem. The only thing that I have done recently is install the Nimo Codec pack. Any help is appreciated.

Thanks,
Prospero

[Prospero424]

Well, I got the updated ogg filters installed after rebooting a couple of times into safe mode, but my ogm files still will not play. HELP!!

[Prospero424]

Well, I figured it out. ALL FIVE ogm files I tried to play were corrupted. I don't know how they got corrupted because they USED to work fine, but several new ones I found work fine.

nevermind