The game engine is unstable, most of the trainer-related crashes are not because the trainer doesn't work, but because the game tries to connect to the internet everytime you score higher than a C- on a boss stage.
The invulnerability also glitches the helicopter stage *sometimes* and you hover there taking rocketfire non-stop and can't kill them because the game thinks you're *DEAD*
.. same with boss becomes invulnerable after #2, so there's some weird scripting going on with uploading player stats and the trainer's affect. (Even if you get 100+ style points, by the end of the level, it'll drop to less than one quarter of that, for example: 27 style points when I actually saw it say 130.
Even if you block the game's internet access, it will still try and crash when you unlock something.
I think it means 1) Patch needed 2) New NoDVD, 3) Trainer update
But we have to wait on 1 and 2.
Not necessary I didn't had any big problems under 1.0, but 1.10a surely fix a crapload of bugs/fixes. Unfortunaly No news out from PWizard, ofcourse busy guys they are, new trainers coming out and are busy, but I really would love to see a nice trainer for 1.10a. Only sad part, those that can't afford 1 yr membership or unl. membership have to wait for about 2 to 3 months :O