Getting a strange "Internal error, check of model failed with no error message." when trying to check a model with reinit.

[donida]

When trying to check a model (here attached) the OMC returns a strange error:
"Internal error, check of model failed with no error message."

If the reinit command is substituted by an assignment, all works fine.

Probably the reinit command is not supported right now, but the OMC should return a different message, something like:
"reinit command not yet supported"

[Martin Sjölund]

Works in trunk