If you have multiple ExtendSim products on your computer (for example a Model Developer Edition and an Analysis RunTime version), it is generally better to open the ExtendSim product you want to use first, then open the model. If you double-click on a model file, it will open the last ExtendSim product installed.
There are two common issues if you try to access a Microsoft Excel spreadsheet from ExtendSim:
Possible causes are:
To launch an application with Administrative privileges, either right-click the application and select Run as Administrator or contact your IT or Admin and have them launch the application in your user account with the correct Admin permissions. This only needs to be done once. After the application is properly registered, neither option will be required again.
If you have ExtendSim 10 as well as a prior release, such as ExtendSim 9, installed on the same computer, double-clicking a model file might not open the release that you want because:
Getting an error message starting Model file ended prematurely... indicates that the model you are trying to open didn't save correctly. In most cases this is caused by a bug that happened in ExtendSim releases earlier than 10.0.5 that if you accessed the properties of a hierarchical block (either by right-clicking or by using the command Ctrl+i) before you saved the model.
Unfortunately, you probably won't even realize there is a problem until you try to open the saved model. The error message could look like either of these two screenshots, and mention DRAWOBJECT tag or notebooks tag.
If you encounter this error message when trying to open a model file, it indicates the file didn’t save properly after you created a new hierarchical block.
Simulation models are data intensive. Saving can be slower if you aren't saving to your local device or if there is a lot of unnecessary data being saved with the model.