Ventana software support forum

When I try to continu a game through Venapp, I sometimes get the message: "Model Mismatch Unable to Save"

On other occasions when I start a new game overwriting an existing game, I get the same message (not all the time).

The number of occurances has deminished after saving the model in binary format, but has not completely disappeared. As far as I can see, there is no problem while continuing with the game, but I haven't checked it extensively.
Can anybody give me a suggestion what might be the cause of this error?

Jeroen

Hi Jeroen,

If you want to continue a game the exisiting run must come from the same model. Vensim uses the time stamp of the last model check to validate the sameness of the model. This has two implications. First you must use a binary model (.vmf file). Second you can't change, or even check the model without breaking the connection.

Hope that helps.

Bob eberlein

That should explain most of it, but I still wonder how it is possible I still can continu my game? Although I found some minor mismatches between the returned values and the actual values in the model.