Michael
Looks to me like a licencing issue. This tryout edition, where did you get
hold of it? Is it a free limited time licence?
If I were you, I would not be trying to use Mechanica Motion for this kind
of model anyway. I would use MDX & MDO. Mechanica Motion requires you to
have a C compiler loaded, so that could be part of the problem.
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David Reid
Optima Design Services
davidr@optima-design.co.uk