I've tried completely uninstalling and reinstalling several times but still get the same error message. The other links on the help menu open the correct page in IE.
System details are (don't know if they're any help) :
Media Center 10.0.132 -- C:\Program Files\J River\Media Center\
Microsoft Windows XP Workstation 5.1 Service Pack 1 (Build 2600)
Intel Pentium 4 2404 MHz MMX / Memory: Total - 523 MB, Free - 204 MB
Internet Explorer: 6.0.2800.1106 / ComCtl32.dll: 5.82 (xpsp1.020828-1920) / Shlwapi.dll: 6.00.2800.1400 / Shell32.dll: 6.00.2800.1233 (xpsp2.030604-1804) / wnaspi32.dll: 4.71 (0002) , ASPI for Win32 DLL, Copyright © 1989-2002 Adaptec, Inc. / Aspi32.sys: 4.71 (0002)
Ripping / Drive D: Mode:Normal Type:Auto Speed:Max
Drive E: Mode:Normal Type:Auto Speed:Max
Drive G: Mode:Normal Type:Auto Speed:Max
Drive H: Mode:Normal Type:Auto Speed:Max
Digital playback: Yes / 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 D: SONY DVD RW DW-U14A Addr: 1:0:0 Speed:24 MaxSpeed:24 BurnProof:Yes
Test mode: No / Eject after writing: Yes / Direct decoding: Yes / Write CD-Text: Yes
Use playback settings: No / Normalization: None