Hi.
I've got foobar 0.8.2 and running windows xp sp2.
I have ~6000 mp3 songs and when I put them on the list it takes a while while when I move the list for display to update on songs. This is all for first time display and of course while it updates once it's smooth from there. Problem occurs when I turn on search dialog and input some words and program begins searching. First it freezes and then after some time it crashes with log opened in notepad. When I do search on smaller playlist where I've been gone through every songs and every display has been updated it works fine. Actualy this is not a problem for me, just reporting a possible bug. And apart from standard I'm using mp3pro decoder (the one that uses nero's).

here's the output, I can reproduce it any time:

Illegal operation:
Code: C0000005h, flags: 00000000h, address: 0129BB6Dh
Access violation, operation: read, address: 0000001Ch
Call path:
WinMain=>app_mainloop
This is the first crash logged by this instance.
Code bytes (0129BB6Dh):
0129BB2Dh: 50 14 89 45 FC 8B 45 FC 8B E5 5D C2 0C 00 CC CC
0129BB3Dh: CC CC CC 55 8B EC 51 8B 45 08 83 78 04 00 74 17
0129BB4Dh: 8B 4D 08 8B 51 04 8B 45 08 8B 48 04 8B 01 52 FF
0129BB5Dh: 50 08 89 45 FC EB 0F 8B 4D 08 8B 11 8B 45 08 50
0129BB6Dh: FF 52 1C 89 45 FC 8B 45 FC 8B E5 5D C2 04 00 CC
0129BB7Dh: CC CC CC 55 8B EC 83 EC 14 83 7D 10 00 75 0A B8
0129BB8Dh: 57 00 07 80 E9 75 01 00 00 8B 45 10 C7 00 00 00
0129BB9Dh: 00 00 68 B4 AD 2E 01 8B 4D 0C 51 E8 73 57 FF FF
Stack (0012F874h):
0012F854h: 00DDE240 7C9C76F0 77F643DD 7C9C76F0
0012F864h: 00000004 00000000 00DDD74C 00000000
0012F874h: 00F07530 012DFB10 0012F8CC 00BD3E93
0012F884h: 00F07530 00000000 00BD3CA4 0012FAE0
0012F894h: 01E159A0 00000001 00BD83D0 01CF5508
0012F8A4h: 00000036 00000036 00000000 00000025
0012F8B4h: 0012F8D4 01ED3AD8 00BD4A90 00000030
0012F8C4h: 01ED3F28 01E15740 0012F96C 00BD3876
0012F8D4h: 00BD83D0 01ED3A30 00000047 00000047
0012F8E4h: 00000000 00000036 0012F958 0012F954
0012F8F4h: 0012F950 0012F948 0012F940 0012FAE0
0012F904h: 00FE1A48 00000000 00000000 00BD83D0
0012F914h: 00000000 00000000 00000000 00000000
0012F924h: 00000000 00BD83D0 00FE1428 0000001B
0012F934h: 0000001B 00000000 0000000A 0012F9B8
0012F944h: 0012F98C 7C90EE18 7C910570 FFFFFFFF
0012F954h: 7C91056D 77C2C2DE 00FE1A48 01D8BA43
0012F964h: 00000002 00000000 0012F994 00437416
0012F974h: 00000000 0012FAE0 00000001 00FE1A48
0012F984h: 00000000 00000000 B2518A41 B2518A41
Registers:
EAX: 00F07530, EBX: 77C2C21B, ECX: 00F07530, EDX: 00000000
ESI: 00F28D48, EDI: 00F28D48, EBP: 0012F87C, ESP: 0012F874
Crash location: "mp3PRO", loaded at 01290000h - 0132E000h

Loaded modules:
foobar2000 loaded at 00400000h - 00452000h
ntdll loaded at 7C900000h - 7C9B0000h
kernel32 loaded at 7C800000h - 7C8F4000h
USER32 loaded at 77D40000h - 77DD0000h
GDI32 loaded at 77F10000h - 77F56000h
ole32 loaded at 774E0000h - 7761C000h
msvcrt loaded at 77C10000h - 77C68000h
ADVAPI32 loaded at 77DD0000h - 77E6B000h
RPCRT4 loaded at 77E70000h - 77F01000h
COMCTL32 loaded at 773D0000h - 774D2000h
SHLWAPI loaded at 77F60000h - 77FD6000h
utf8api loaded at 10000000h - 1000D000h
comdlg32 loaded at 763B0000h - 763F9000h
SHELL32 loaded at 7C9C0000h - 7D1D4000h
foo_albumlist loaded at 003E0000h - 003EA000h
foo_ape loaded at 00940000h - 00960000h
foo_cdda loaded at 003F0000h - 003FE000h
foo_clienc loaded at 00960000h - 0096B000h
foo_console loaded at 00970000h - 00977000h
foo_diskwriter loaded at 00980000h - 00992000h
WINMM loaded at 76B40000h - 76B6D000h
foo_dsp_extra loaded at 00A20000h - 00A35000h
foo_flac loaded at 00A40000h - 00A56000h
foo_id3v2 loaded at 00A60000h - 00A8E000h
MSVCP60 loaded at 76080000h - 760E5000h
foo_input_std loaded at 00A90000h - 00B32000h
MSACM32 loaded at 77BE0000h - 77BF5000h
foo_masstag loaded at 00B40000h - 00B51000h
foo_mod loaded at 00B60000h - 00B69000h
BASS loaded at 00B70000h - 00BCA000h
foo_nero loaded at 00BD0000h - 00BDD000h
MFC42 loaded at 73DD0000h - 73ECE000h
foo_output_std loaded at 00BE0000h - 00BE9000h
foo_out_dsound_ex loaded at 00BF0000h - 00BF9000h
DSOUND loaded at 73F10000h - 73F6C000h
VERSION loaded at 77C00000h - 77C08000h
foo_out_ks loaded at 00C10000h - 00C1B000h
SETUPAPI loaded at 77920000h - 77A13000h
foo_read_http loaded at 00C20000h - 00C29000h
WS2_32 loaded at 71AB0000h - 71AC7000h
WS2HELP loaded at 71AA0000h - 71AA8000h
foo_rgscan loaded at 00C30000h - 00C3B000h
foo_spc loaded at 00C40000h - 00C51000h
foo_speex loaded at 00C60000h - 00C78000h
foo_ui_std loaded at 00C80000h - 00C97000h
foo_unpack loaded at 00CA0000h - 00CD1000h
OLEAUT32 loaded at 77120000h - 771AC000h
foo_vis_manager loaded at 00CE0000h - 00CE8000h
foo_wavpack loaded at 00CF0000h - 00CFB000h
MSCTF loaded at 74720000h - 7476B000h
UxTheme loaded at 5AD70000h - 5ADA8000h
mp3PRO_dmo loaded at 26000000h - 26012000h
VqfEncLib1 loaded at 015C0000h - 016CC000h
WINTRUST loaded at 76C30000h - 76C5E000h
CRYPT32 loaded at 77A80000h - 77B14000h
MSASN1 loaded at 77B20000h - 77B32000h
IMAGEHLP loaded at 76C90000h - 76CB8000h
wdmaud loaded at 72D20000h - 72D29000h
msacm32 loaded at 72D10000h - 72D18000h
midimap loaded at 77BD0000h - 77BD7000h
KsUser loaded at 73EE0000h - 73EE4000h
mp3PRO loaded at 01290000h - 0132E000h
IMM32 loaded at 76390000h - 763AD000h
DBGHELP loaded at 59A60000h - 59B01000h

Stack dump analysis:
Address: 012DFB10h, location: "mp3PRO", loaded at 01290000h - 0132E000h
Address: 00BD3E93h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD3CA4h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD83D0h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD4A90h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD3876h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD83D0h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD83D0h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 00BD83D0h, location: "foo_nero", loaded at 00BD0000h - 00BDD000h
Address: 7C90EE18h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "strchr" (+00000117h)
Address: 7C910570h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlFreeHeap" (+00000133h)
Address: 7C91056Dh, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlFreeHeap" (+00000130h)
Address: 77C2C2DEh, location: "msvcrt", loaded at 77C10000h - 77C68000h
Symbol: "free" (+000000C3h)
Address: 00437416h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043733Dh, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00436964h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 004012D5h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 77C12088h, location: "msvcrt", loaded at 77C10000h - 77C68000h
Symbol: "__non_rtti_object::`vftable'" (+00000C90h)
Address: 7C90EE18h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "strchr" (+00000117h)
Address: 7C910570h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlFreeHeap" (+00000133h)
Address: 7C91056Dh, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlFreeHeap" (+00000130h)
Address: 00402952h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00436B56h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0041CAC0h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0041D6D6h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00445450h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 10002BE6h, location: "utf8api", loaded at 10000000h - 1000D000h
Symbol: "uAddStringLower" (+00000000h)
Address: 00439908h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043997Ch, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00439974h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00439960h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00439974h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00439960h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0041C79Ch, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 004458A4h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00426886h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0042630Fh, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043A200h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043A1ECh, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043946Ch, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043A200h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043A1ECh, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 004458A4h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043AA4Ch, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043986Ch, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0043986Ch, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 00426384h, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 0042630Fh, location: "foobar2000", loaded at 00400000h - 00452000h
Address: 77D54BCCh, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "CreateIconFromResourceEx" (+000001E8h)
Address: 77D494E3h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetWindowLongA" (+00000067h)
Address: 77D4B2D5h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefWindowProcW" (+000000F0h)

Version info:
foobar2000 v0.8.2
UNICODE

Do your files have .mp3 or .mp3pro extension? If you want to use Nero decoder just remove original mp3 decoder provided with foobar. And, BTW, why do you want to use nero decoder? Have you some problems with decoder included in foobar?

Sorry for delay.
I have mp3pro files in .mp3 extension. 0.8.2 version didn't originally support mp3pro and I think 0.8.3 dosen't also. The creator of foobar who's name I forgot told me he dosen't intend to build in mp3pro support at all when I asked about it first time and I was directed to use nero's decoder.

I noticed that error dosen't occur only when searching for songs, it shows up regulary when I'm only listening to the big playlist (at random). Every time it happened program was updating playlist so I think the problem is somewhere in reading files or possible some thread error (when you do multiple things at once and then comes to conflict).
I'll download the latest version and try to use normal decoder first to see if crash happens again.

There are some patent issues with mp3pro decoder and at this moment there is no chance to include it with foobar installer. This issuse was discussed several times on foovar's forums.

About your problem:
Try to rename all your mp3pro files to mp3pro extension and check if it works.
Foobar's build in decoder will playback your mp3pro files but in poor quality
(because doesn't play sbr part).

Off-topic quesions: why do you still use mp3pro? Search HA forums for other better recommendations

First when I heard about mp3pro I thought it's like mp3 just better (size)... didn't know nothing about licesing stuff that it's developer team requested (what a bunch of assh****). Now I'm collecting regular mp3s but converting 5k mp3pro songs to mp3 again (after mp3>mp3pro) is too much and I don't want to lose quality.