[CinCV] Load/Render problems

Hi all - newbie here!

I recently got cinelerra CV from the git repo (about a month ago). I built
it and tried running with both internal and external ffmpeg (the latter had
a few #include inconsistencies, but nothing significant). For both, I keep
getting the same set of problems loading a file and/or rendering it in the
timeline or the other windows. They all seem to fall into one of these:

Problem 1) The file loads (both video and audio), but it is zero length. No
messages are output to the console.

Problem 2) The file loads, but only part of it is rendered - ie, the first
few minutes of an hour video. This happens often with video I captured from
a VHS tape. While rendering on the timeline, I get this output in the
console:

[mpeg4 @ 0x1229630]overreading 9 bits
[mpeg4 @ 0x1229630]concealing 308 DC, 308 AC, 308 MV errors
[mpeg4 @ 0x1229630]cbpc damaged at 0 8
[mpeg4 @ 0x1229630]Error at MB: 360
[mpeg4 @ 0x1229630]cbpc damaged at 3 15
[mpeg4 @ 0x1229630]Error at MB: 678
[mpeg4 @ 0x1229630]cbpc damaged at 1 23
[mpeg4 @ 0x1229630]Error at MB: 1036
[mpeg4 @ 0x1229630]concealing 1012 DC, 1012 AC, 1012 MV errors
[mpeg4 @ 0x1229630]Error at MB: 360
[mpeg4 @ 0x1229630]cbpc damaged at 1 15
[mpeg4 @ 0x1229630]Error at MB: 676
[mpeg4 @ 0x1229630]Error at MB: 1035
...

This keeps repeating many times with different values. If I position the
cursor somewhere, and try to play it in the compositor window, it will crash
and terminate, without any message. Sometimes, though, it will generate a
SIGSEV, spit out a stack trace (see example below), and then barf a core
dump:

signal_entry: got SIGSEGV my pid=2647 execution table size=16:
mainerror.C: show_error_local: 176
mainerror.C: show_error_local: 179
mainerror.C: show_error_local: 207
mainerror.C: show_error_local: 209
mainerror.C: show_error_local: 211
mainerror.C: create_objects: 67
mainerror.C: create_objects: 72
mainerror.C: create_objects: 75
mainerror.C: create_objects: 90
mainerror.C: create_objects: 92
mainerror.C: show_error_local: 213
bchash.C: copy_from: 276
bchash.C: copy_from: 279
bchash.C: copy_from: 288
vrender.C: run: 437
vrender.C: run: 448
signal_entry: lock table size=20
0x90e9588 CWindowTool::input_lock CWindowTool::run
0x8a66c78 BC_Synchronous::next_command BC_Synchronous::run
0x91bf330 TransportQue::output_lock PlaybackEngine::run
0x9231520 ResourceThread::draw_lock ResourceThread::run
0xb0de6ac0 IndexThread::output_lock IndexThread::run
0x91c1738 BC_WindowBase::event_condition BC_WindowBase::get_event
0xb39216f8 AudioDevice::play_lock AudioDevice::run 1
0x910ce60 TransportQue::output_lock PlaybackEngine::run
0xb390a420 CICache::total_lock CICache::check_out *
0x925f528 BC_Repeater::pause_lock BC_Repeater::run
0x904aa00 BC_WindowBase::event_condition BC_WindowBase::get_event
0x9134740 BC_WindowBase::event_condition BC_WindowBase::get_event
0x9ad1cef0 BC_Repeater::startup_lock BC_Repeater::initialize
0x8f20b68 BC_WindowBase::event_condition BC_WindowBase::get_event
0x9fffec78 LoadClient::input_lock LoadClient::run
0x9fffed78 LoadClient::input_lock LoadClient::run
0x9fffef18 LoadClient::input_lock LoadClient::run
0x9d6ff2c8 LoadClient::input_lock LoadClient::run
0x910e498 BC_WindowBase::event_condition BC_WindowBase::get_event
0x9260b38 BC_WindowBase::event_condition BC_WindowBase::get_event
BC_Signals::dump_buffers: buffer table size=0
BC_Signals::delete_temps: deleting 0 temp files
SigHandler::signal_handler total files=0
Aborted (core dumped)

Problem 3) The video and/or the audio stream(s) don't load. I get a message
in the console that it didn't recognize the format tag, although it seems to
recognize the actual format (from the "resources->info" menu selection).
Sometimes if I force a tag into the file (via ffmpeg or mencoder), then the
stream(s) will load.

FWIW: the files all run in mplayer, vlc, and ffplay. I can also open and
edit them in avidemux (but it will only do cut and paste).

Some specs:

Fedora 12, kernel 2.6.31.12-174.2.3.fc12.i686
Dual Xeon 2.8Ghz w/ 2G RAM

Cinelerra 2.1CV (C) 2006 Heroine Virtual Ltd.
Compiled on Sun Jan 31 14:27:40 PST 2010

Any help with these problems will be greatly

TIA

ken