Is the Sequence setting in FCE matching the audio rate?
FCE Sequences are 32 or 48 kHz matching 12 or 16 bit respectively.
Right click the Sequence icon in the FCE Browser and select Item Properties to double check.
Is the target drive formatted to MAC OS Extended?
Plenty of free space on the target drive?
I always get general error (49) when rendering the audio.
For iMovie this goes - Most probably for FCE too
Error -49 opWrErr File already open with write permission
Trash the preference files while application is NOT Running.
from Karsten Schlüter
Some users notice on exporting larger projects from within iMovie that this operation is aborted with an 'error -49'
This issue occours only on MacOs machines using 10.7x
try switching-off the Local Mobile Backup
in Terminal copy/paste
sudo tmutil disablelocal
Yours Bengt W
I tried using iMovie, then it worked. It's an old version of iMovie called iMovie HD.
Then I tried Final Cut X, everything works perfectly!
I'll try trashing the preference files if I have to use FCE again.
Actually I'm running snow leopard, however mountain lion was installed before on this machine..