Ron Garret wrote in
:

The manual doesn't describe symptoms.

Then I'd say you're screwed. It is unlikely in the extreme that your
sim has anything remotely approaching a realistic model of ice
formation. Absent documentation, the only way I can think of to figure
out what kind of crude hack it has it to reverse-engineer the code.

You did say you are a computer expert, right?

Perhaps he can send EMail to Bill Gates. If he is as persistent as he has
been here, I bet he'll even get a reply.