Run-time problem

P46 - The memory stack is exhausted

Most problems are detected when Inform translates the source text, but this is one of the exceptions, a "run-time problem" which emerges only during play.

The memory stack is used to store action, activity and rulebook variables, and now it has been exhausted. This must be because too complicated a combination of rulebooks (and actions) are all active at once: the story file is simply trying to do too much.