Same old story - It was running fine with 8.0.293 and I just upgraded and now it won't stop crashing. I am including MJ System Info as well as a copy of the DrWatson output from Windows 2000. Not sure that you need this all, but I figured why not be thorough!
Basically, I was just messing around with MJ. No music playing. I was trying to get cover art imported for some existing MP3's when it first crashed. Then after rebooting, opened MJ and was just rooting around and it crashed again. I am going to play a bit more and see if it does it again. One more time and I am going to load the previous version.
aRCLiGHTMJ:Media Jukebox PLUS 8.0.318
Install Path: E:\Program Files\J River\Media Jukebox\
CPU: Intel Pentium III 598 MHz MMX
Memory: Total - 130 MB, Free - 40 MB
OS: Microsoft Windows 2000 Workstation 5.0 Service Pack 2 (Build 2195)
Internet Explorer: 6.0.2600.0000
ComCtl32.dll: 5.50.4704.1100
Shlwapi.dll: 6.00.2600.0000
Shell32.dll: 5.00.3315.2902
wnaspi32.dll: 4.57 (1008) , ASPI for Win32 (95/NT) DLL, Copyright © 1989-1997 Adaptec, Inc.
Aspi32.sys: 4.57 (1008)
[dr. watson removed by JimH -- not necessary, thanks]