There are lots of bugs in DYOM which causes crash while making a mission. Here share your ideas about bugs.That will help to prevent crashes.
Don't share your problems here. For that please go to Bug Report Topic
Here are some of the ways crashes can be prevented.
No double hide - Chaos17
Hide used actors - Chaos17
Follow actor cutscene - Martin Strada
Ball Actor Bug - Martin Strada
Coloured squares - Martin Strada
27472849374 number spam bug - Martin Strada
Route Point Activation Crash - Martin Strada
Hidden Texts - Martin Strada
Invisible Interior - Martin Strada
Invisible Checkpoint - Martin Strada
Hope this was helpful
Share yours, and I'll add in the first page with your name.