BANDSTAND and WAV production (New Problem)

Again I have problem with the WAV production from BANDSTAND (I've got 1.0.3).

I'm loading a MIDI file which I have created with BIAB 2008 and has duration 5:59. When I'm playing it back in BANDSTAND everything is OK. The I WAV I produce however although its has the correct duration (5:59) is missing the last few seconds. It is something I cannot explain.

I've watched the rendering process step by step and I've found out that it finishes before the playback progress bar that runs in the MIDI window at the botoom right of the main window. The strange thing is that the play back bar during rendering, for some reason, goes over the 5:59. That may be the problem.

Any idea anyone?