okay maybe this will help out , check out "last_error" in the manual :

Code:
level_load("levelname.wmb");
wait(1);
if (last_error>0)
{
error("missing entities");
last_error=0;
}


also i found that most "acknex has stopped working" reports on the forum , was related to textures/models files , so a test could be to see if every one opens up fine in med-engine preview , and also a ent_create test for each of those used in the level might reveal any possible ones that may cause a problem (if any at all), plus , removing all of them from the level and adding them back individualy and testing each with level_load might reveal any that could cause a problem ..

Compulsive compiler