I moved all the messages like "Object event" and "No windows avail-able for popping." into one wiki page, but the rest of the messages currently have no replication method.
If you find a method to replicate one of the messages that have no replication method, please post it here.
This may be hard to do, but here are theories on what causes the messages. Theories are to be taken with a pinch of salt without disassembling the game, and seeing if that is what really happens.
Messages with replication methods found:
*No windows avail-able for popping.