Quicktime error -2048 when trying to play.mov files.

I have been frustrated this weekend trying to find a solution to a problem that has only recently occurred accessing some digitised VCR tapes that had been archived on an external HDD. These are files that played back fine on my Quicksilver after I had recorded them, but now give a "Movie Not Available" message in Quicktime. However when opened in VLC I get a debug message box with the following information posted below. Any clues as to what might be the problem?

I recorded the files from my VCR using an ADVC-100 DA converter over firewire into BTV Pro which created .mov files (DV-PAL). When I try to open the files in BTV Pro, I get a message box "There was an error opening the movie. No Movie found. Error code 20,-2048" Did a search for this error and -2048 appears to be a Quicktime error, so am wondering if there is a problem with my installation of Quicktime. I have got all the usual suspects in stalled, Flip4Mac, Perian, VLC. Mpeg Streamclip but can't get the file to open. The external HDD is Mac formatted but I found some info about problems with missing resource forks in older .mov files causing problems if copied to NTFS HDD's.

Any ideas as to where to look next will be appreciated.

+main debug: CPU has capabilities AltiVec FPU+
+main debug: looking for memcpy module: 2 candidates+
+main debug: using memcpy module "memcpyaltivec"+
+main debug: thread started+
+main debug: thread 26421248 (Interaction control) created at priority 0 (../../src/interface/interaction.c:382)+
+main debug: Creating an input for 'Media Library'+
+main debug: Input is a meta file: disabling unneeded options+
+main debug: `file/xspf-open:///Users/irdesigns/Library/Preferences/VLC/ml.xspf' gives access `file' demux `xspf-open' path `/Users/irdesigns/Library/Preferences/VLC/ml.xspf'+
+main debug: creating access 'file' path='/Users/irdesigns/Library/Preferences/VLC/ml.xspf'+
+main debug: looking for access module: 3 candidates+
+access_file debug: opening file `/Users/irdesigns/Library/Preferences/VLC/ml.xspf'+
+main debug: using access module "access_file"+
+main debug: TIMER module_Need() : 26.549 ms - Total 26.549 ms / 1 intvls (Avg 26.549 ms)+
+main debug: Using AStream*Stream+
+main debug: pre-buffering...+
+main debug: received first data for our buffer+
+main debug: creating demux: access='file' demux='xspf-open' path='/Users/irdesigns/Library/Preferences/VLC/ml.xspf'+
+main debug: looking for demux module: 1 candidate+
+playlist debug: using XSPF playlist reader+
+main debug: using demux module "playlist"+
+main debug: TIMER module_Need() : 19.485 ms - Total 19.485 ms / 1 intvls (Avg 19.485 ms)+
+main debug: `file/xspf-open:///Users/irdesigns/Library/Preferences/VLC/ml.xspf' successfully opened+
+main debug: looking for xml module: 2 candidates+
+main debug: using xml module "xml"+
+main debug: TIMER module_Need() : 99.281 ms - Total 99.281 ms / 1 intvls (Avg 99.281 ms)+
+playlist debug: parsed 0 tracks successfully+
+main debug: removing module "xml"+
+main debug: EOF reached+
+main debug: control type=1+
+main debug: removing module "playlist"+
+main debug: removing module "access_file"+
+main debug: TIMER input launching for 'Media Library' : 71.406 ms - Total 71.406 ms / 1 intvls (Avg 71.406 ms)+
+main debug: thread started+
+main debug: waiting for thread initialization+
+main debug: thread 25213440 (preparser) created at priority 0 (../../src/playlist/thread.c:79)+
+main debug: thread started+
+main debug: waiting for thread initialization+
+main debug: thread 26413056 (fetcher) created at priority 0 (../../src/playlist/thread.c:108)+
+main debug: thread started+
+main debug: waiting for thread initialization+
+main debug: rebuilding array of current - root Playlist+
+main debug: rebuild done - 0 items, index -1+
+main debug: thread 26417152 (playlist) created at priority 0 (../../src/playlist/thread.c:117)+
+main debug: looking for interface module: 1 candidate+
+main debug: using interface module "hotkeys"+
+main debug: TIMER module_Need() : 48.316 ms - Total 48.316 ms / 1 intvls (Avg 48.316 ms)+
+main debug: thread started+
+main debug: thread 25212416 (interface) created at priority 0 (../../src/interface/interface.c:168)+
+main debug: looking for interface module: 17 candidates+
+main debug: using interface module "signals"+
+main debug: TIMER module_Need() : 34.354 ms - Total 34.354 ms / 1 intvls (Avg 34.354 ms)+
+main debug: thread started+
+main debug: thread 26470400 (interface) created at priority 0 (../../src/interface/interface.c:168)+
+main: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.+
+main debug: looking for interface module: 4 candidates+
+main debug: using interface module "macosx"+
+main debug: TIMER module_Need() : 511.368 ms - Total 511.368 ms / 1 intvls (Avg 511.368 ms)+
+main debug: thread started+
+main debug: thread 26482176 (interface) created at priority 0 (../../src/interface/interface.c:148)+
+main debug: no fetch required for Playlist (art currently (null))+
+main debug: adding item `testing.mov' ( /Volumes/IR My Book/BTV Videos ƒ/testing.mov )+
+main debug: rebuilding array of current - root Playlist+
+main debug: rebuild done - 1 items, index -1+
+main debug: starting new item+
+main debug: processing request item testing.mov node Playlist skip 0+
+main debug: resyncing on testing.mov+
+main debug: testing.mov is at 0+
+main debug: creating new input thread+
+main debug: Creating an input for 'testing.mov'+
+main debug: waiting for thread initialization+
+main debug: thread started+
+main debug: thread 26771456 (input) created at priority 22 (../../src/input/input.c:370)+
+main debug: `/Volumes/IR My Book/BTV Videos ƒ/testing.mov' gives access `' demux `' path `/Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+main debug: creating demux: access='' demux='' path='/Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+main debug: looking for access_demux module: 2 candidates+
+main debug: no fetch required for Playlist (art currently (null))+
+macosx debug: input has changed, refreshing interface+
+macosx debug: notification received in VLC with name VLCOSXGUIInit and object VLCEyeTVSupport+
+main debug: no fetch required for Playlist (art currently (null))+
+main debug: TIMER module_Need() : 1288.828 ms - Total 1288.828 ms / 1 intvls (Avg 1288.828 ms)+
+main debug: creating access '' path='/Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+main debug: looking for access module: 8 candidates+
+vcd debug: trying .cue file: /Volumes/IR My Book/BTV Videos ƒ/testing.cue+
+vcd debug: could not find .cue file+
+access_file debug: opening file `/Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+main debug: using access module "access_file"+
+main debug: TIMER module_Need() : 110.747 ms - Total 110.747 ms / 1 intvls (Avg 110.747 ms)+
+main debug: Using AStream*Stream+
+main debug: pre-buffering...+
+main debug: received first data for our buffer+
+main debug: pre-buffering done 1408981 bytes in 0s - 9031 kbytes/s+
+main debug: creating demux: access='' demux='' path='/Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+main debug: looking for demux module: 59 candidates+
+mp4 debug: found Box: mdat size 32+
+mp4 debug: skip box: "mdat"+
+mp4 debug: found Box: mdat size 18891508192+
+mp4 debug: skip box: "mdat"+
+mp4 debug: dumping root Box "root"+
+mp4 debug: | + mdat size 32+
+mp4 debug: | + mdat size 1711639008+
+mp4 debug: file type box missing (assuming ISO Media file)+
+mp4 error: MP4 plugin discarded (no moov box)+
+avformat debug: detected format: mov,mp4,m4a,3gp,3g2,mj2+
+avformat error: av open_inputstream failed+
+lua debug: Trying Lua scripts in /Users/irdesigns/Library/Preferences/VLC/lua/playlist+
+lua debug: Trying Lua scripts in /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/anevia_streams.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/appletrailers.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/bbc couk.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/break.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/canalplus.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/cue.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/dailymotion.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/france2.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/googlevideo.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/joox.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/koreus.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/lelombrik.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/megavideo.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/metacafe.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/youtube.lua+
+lua debug: Trying Lua playlist script /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/lua/playlist/youtube_homepage.lua+
+lua debug: Trying Lua scripts in /Applications/VLC ƒ/VLC.app/Contents/MacOS/share/share/lua/playlist+
+ps error: cannot peek+
+vobsub debug: could not read vobsub IDX file+
+dummy error: unknown command `/Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+subtitle debug: subtitle demux discarded+
+main warning: no demux module matching "mp4" could be loaded+
+main debug: TIMER module_Need() : 1954.294 ms - Total 1954.294 ms / 1 intvls (Avg 1954.294 ms)+
+main error: no suitable demux module for `/:///Volumes/IR My Book/BTV Videos ƒ/testing.mov'+
+main debug: finished input+
+main debug: dying input+
+main debug: removing module "access_file"+
+main debug: thread ended+
+macosx debug: input has stopped, refreshing interface+
+macosx debug: addition to non-blocking error panel received+
+main debug: dead input+
+main debug: thread 26771456 joined (../../src/playlist/engine.c:244)+
+main debug: TIMER input launching for 'testing.mov' : 3573.150 ms - Total 3573.150 ms / 1 intvls (Avg 3573.150 ms)+
+main debug: starting new item+
+main debug: changing item without a request (current 0/1)+
+main debug: nothing to play+
+main debug: no fetch required for Playlist (art currently (null))+