I'll get the details after new year, when I get to home... spending the holidays at my parents', so I can't post the details right now - but here's what happens:
Similar, during campaign play, every mission starts with Alpha 1 having 17 % hull integrity (weird, seems to be same problem with different hull integrity there with popes2), AND on the escort mission I have no ship, but the Alpha 1 does exist AND it has 17 % hull integrity from start.
When I play the missions through mission simulator@tech room, they work all right.
I can post my computer's specs, but I cannot post the errorlog file and stuff right now... here is my PC:
System: Windows XP Home SP2 Finnish
CPU: AMD 64 Athlon (3000+ or 3200+, cannot remember which one it is, but one of these anyway)
Memory: 1024 MB DDR-SDRAM
Graphics: NVidia GeForce 6600 @ 256 MB
I can use both fs2_open_3.6.7 (optimized for AMD 64) and the build that comes with HTU demo download, but the problem remains the same regardless of the build I use.
Earlier you suggested that my original Freespace install might be conflicting with TBP install (because I see the Heat'em Up intro video whenever I start fs2_open, regardless of whether I play basic FS or TBP) but I haven't had time to test this. This might be behind it, but as I said, haven't been able to test it yet - and I'll get home somewhere around 4th or 5th January, so I'll get to the problem then.