this is happening with me.
Go for rescan, windows flashes for half a sec,
then gone.
DB is reset to 51k.
Replacing it with backup DB just repeats the process over again.
CODE
Core (2006-11-25 23:21:34)
foobar2000 core 0.9.4.2
foo_abx.dll (2006-11-25 23:20:22)
ABX Comparator 1.3.1
foo_ac3.dll (2007-02-07 04:44:48)
AC3 decoder 0.9
foo_albumlist.dll (2006-11-26 03:49:06)
Album List 3.2.0
foo_cdda.dll (2006-11-25 23:19:46)
CD Audio Decoder 2.1.1
foo_converter.dll (2006-11-25 23:20:00)
Converter 1.0.1
foo_dsp_std.dll (2006-11-25 23:20:12)
Standard DSP array 1.0
foo_dumb.dll (2007-01-27 00:42:58)
DUMB module decoder 0.9.8.4
foo_freedb2.dll (2006-08-30 04:43:04)
freedb Tagger 0.5.2a
foo_input_matroska.dll (2006-10-13 13:46:34)
Matroska Plugin 0.9.2.0
foo_input_std.dll (2006-11-25 23:19:14)
FLAC Decoder 1.1.0
Standard Input Array 1.0
WMA Decoder 1.1
foo_managedWrapper.dll (2006-08-01 19:10:46)
foo_managedWrapper 0.3
foo_masstag.dll (2006-11-25 23:18:42)
Masstagger 1.6
foo_midi.dll (2007-01-25 22:58:18)
MIDI synthesizer host 1.7
foo_mim_notify.dll (2006-08-01 23:39:32)
Miranda IM Notifier 0.8
foo_msnalt.dll (2007-02-22 06:13:32)
MSN Now Playing (alt) 2.4
foo_out_asio.dll (2006-08-13 16:07:52)
ASIO support 1.2.4
foo_prettypop.dll (2006-06-17 16:25:48)
Pretty Popup 1.2.3
foo_rgscan.dll (2006-11-25 23:18:18)
ReplayGain Scanner 2.0.2
foo_ui_columns.dll (2006-11-22 22:05:24)
Columns UI 0.1.3 beta 1v7
foo_ui_std.dll (2006-11-25 23:18:12)
Default User Interface 0.9acc
foo_uie_albumart.dll (2007-01-16 02:04:44)
Album Art Panel 0.2.6
foo_uie_albumlist.dll (2006-11-22 22:57:39)
Album list panel 0.2.1
foo_uie_lyrics.dll (2007-03-12 23:32:45)
Lyric Show Panels 0.3.1.1
foo_uie_queuemanager.dll (2006-12-17 03:21:36)
Queue manager panel 0.2.3
foo_uie_quicksearch.dll (2007-01-03 23:18:46)
Quick Search Toolbar 2.8k
foo_uie_single_column_playlist.dll (2007-01-10 00:43:08)
Single Column Playlist Display 0.5.4 beta [Jan 9 2007 - 15:42:59]
foo_uie_tabs.dll (2006-10-18 07:54:32)
Tabbed panel modified 0.2.5
foo_uie_trackinfo_mod.dll (2007-01-05 22:36:20)
Track info panel mod 0.8.0 beta [Jan 5 2007 - 13:36:12]
foo_uie_vis_egoh.dll (2007-03-12 21:30:28)
Egoh Spectrum analyser (uie) 1.1.2
foo_unpack.dll (2006-11-25 23:20:32)
RAR reader 1.1
ZIP/GZIP reader 1.0
foo_unpack_lha.dll (2007-02-06 21:31:36)
LHA unpacker 1.3
foo_winamp_spam.dll (2006-08-22 01:31:44)
Winamp API Emulator 0.90
hmmmm,
I thought I had already reverted to the older version of the matroska plugin.
nope, seems I had downloaded and forgot to install.
Just installed foo_input_matroska-0.9.1.2 and seems to be working.