Wasn't really sure where to post this, as I'm still using MC 9.0.88. I posted with the same issue a couple of months ago when I was still using MJ8.
http://www.musicex.com/cgi-bin/yabb/YaBB.cgi?board=general;action=display;num=1037432933;start=5One of the suggestions was to try MC9, but I've come across the same bug again. Also, I haven't upgraded to the most current version of 9 since it's been mentioned that MPC plug-in support is broken in the newer versions.
Anyway, the gist of the matter is that I renamed the directory that contains my music files and now
all of the Replay Gain info for 1500 MPCs is gone. No problems with MP3, APE and Vorbis files, however.
The details:
In MC9, I went to My Computer and navigated to the folder where I keep my music files, D:\MediaLibrary. I right-clicked on it and renamed it to D:\Music. Since this operation apparently doesn't actually update the locations for all the music files, I had to go to File/Library/Update Library/Remove Files Which Do Not Exist, then had to re-import the files from the new location. As I've mentioned, the RG info stuck fine for every format except MPC.
Rob
Media Jukebox PLUS 9.0.88 -- C:\Program Files\Media Center\
Microsoft Windows 98 SE
Intel Pentium III 731 MHz MMX / Memory: Total - 261 MB, Free - 133 MB
Resource Info: System - 57 %, GDI - 78 %, User - 57 %
Internet Explorer: 6.0.2800.1106 / ComCtl32.dll: 5.50.4916.400 / Shlwapi.dll: 6.00.2800.1106
Shell32.dll: 4.72.3812.600
wnaspi32.dll: 4.60 (1021) , ASPI for Win32 (95/NT) DLL, Copyright © 1989-1999 Adaptec, Inc. / Aspi32.sys: N/A
Ripping / Drive E: Copy mode:ModeSecure CD Type:Auto Read speed:Max
Drive F: Copy mode:ModeBurstBigBuffer CD Type:Auto Read speed:Max
Digital playback: No / Use YADB: Yes / Get cover art: No / Calc replay gain: Yes / Copy volume: 32767
Eject after ripping: Yes / Play sound after ripping: No
Burning / Drive E: PLEXTOR CD-R PX-W1210A Addr: 0:0:0 Speed:6 MaxSpeed:12 Lib:2 GHS:1 Use MJ Engine:No
Test mode: No / Eject after writing: Yes / Direct decoding: Yes / Two second gap: No / Write CD-Text: Yes
Use playback settings: No / Normalization: None