built subtitles failed ( while there are none to build)

When building my project I get this error:

Sorry, an abnormal condition has been detected.
Before quitting, you have one chance to save your project
(don't use the same name as the original).

I've been saving it under diff names for abt 6/7 times now and it's getting
on my nerves.. thing is it says that there is an error with the subtitles ,
while none of my files contain them o-0

So I'm up the same roads again checking for errors , which I and the programme
can't find..

any ideas anyone?

ow yeah here's my tech spec:

ati radeon 9950
amd athlon 64 3200+
m-audio audiophile 2496
asus a 8v
1 gig of ram