Thanks for the backtrace.
Before investigating this further, I would like to ask you to try the 1.6RC (witih the same compiler) and see if the issue is present there as well.
If the problem is not there in 1.6, we will not try to fix it in 1.4 branch, since that is end of life.
One more question: do you have the IDE setup in a different language than English?
If so, please make the laguage English to see if the error is gone.
(If so, the problem will be in some .po file, and it should be easy to fix.)
Bart