Ventana software support forum

Do you get any errors when running with the same files in Vensim? No, I don't get any error And are you running the same way (eg, a game in the venapp and simulated in Vensim)? It is a simulation in Vensim while I guess it is a game in Venapp as changes to variables are temporary. I haven't tried a...

Thanks Tony. Unfortunately the model is not in the public domain yet, I'm not allowed to distribute it even for debugging purposes. I found a possible explanation: despite the model has not changed, I added two external data files to replace some constant values coded in the model. This could have i...

Hallo, I'm working on a large model using Vensim 5.11A-1. A Venapp interface has been developed to allow external users to test scenarios. Yesterday a small bugs was fixed in the interface. Since that moment I haven't been able to run the model from the interface anymore. If I run the model normally...

Thanks Tony for your reply. With your suggestion I've finally managed to run the compiled simulation, but I still have a question.. It seems that in some cases Vensim generates a floating point error running interpret simulations, while the model runs without problems with compiled simulations.. Did...

I'm trying to compile a model from Vensim 5.9. The compiler I'm using is Microsoft Visual C++ 2008 Express Edition. I’ve edited the file MDL.BAT to reset the path statements and I’ve indicated in Vensim the correct MDL.BAT to be called (Tools->Options->Startup, compiled simulation path). Nevertheles...

Hi Bob, thanks for your help. Actually I think you are right and empty spaces are the cause of the error. We used subranges with the aim of writing only existing combinations, but I suppose Vensim tries to create space for all possible combinations. So the most complex variables have actually 28x250...

Thanks Bob.
However I still don't understand which element makes the difference with our original model, which apparently is bigger. I think we should be able to identify the specific elements that inflate the model until that size.
we'll keep on searching...

Davide

Model does not crash, but only a subset of information is provided. What I get is: Model has 2712 symbols and cannot be simulated -- Sizes: Symbols 42K, Equations 558K, Comments 13K In the original (working) model I have: Model has 9288 symbols, 7553 Lookups, Time + 1068889 levels, 25059921 Auxiliar...

Thanks Bob, unfortunately I can't read the number of variables because the model cannot be simulated given the fatal Vensim error and so this information is not shown in the info. However, about the number of combinations, the maximum number I have now is about 26,000 (41x41x4x4) while in the origin...

Hi, I have a question about a problem with model size. I've been working on a huge vensim model: setting/info says about 2500K for equations. Now I'm trying to create a new model from this one. It includes only a share of the original equations but for some of them I have created new subscripts with...

Great! Thanks Bob!

Hi, a question about functionality of model reader. In the past we purchased Vensim Application Runtime to allow an external user to run an existing model through a Venapp interface. I've just read on the Vensim website that Vensim Application Runtime functionalities have been incorporated within th...

Problem solved. It seems I had logged in the computer with a wrong profile.

I have a strange problem when trying to install Vensim 5.6a (I need this version for testing the compatibility of an external DDL). The installation process aborts with the following message: "Failed to extract file vensim.ini+S" The problem is strange as we have already installed Vensim 5...

Thanks for your reply Bob.
Unfortunately, we already received the model zipped.
We are trying to sort out our problem in a different way

Davide

One question. I'm currently working on a large Vensim model with other partners. One of them has sent me a new part of the model but when I try to open it I get several syntax error messages. After a quick check I discovered that several equations are "broken". i.e.: <name_variable> is wri...

Originally posted by bob@vensim.com If I had to guess it would be that you have a GET XLS DATA call and that you are using an older version of Vensim. It is also possible that something little has turned big - try suppressing warnings in Tools>Options>Settings and see if that makes any difference. ...

I run up against a strange problem: after some changes to an existing model (essentially adding subscripts to several variables to segment parameters values) when I try to simulate the model, the box "setting up the simulation" appears but the simulation does not start (I waited for some m...