| Applicable Versions | NetSim Academic | NetSim Standard | NetSim Pro |
| Applicable Releases | v11.1 | v12 |
The following error will be displayed when the user clicks on the Open Simulation option in the NetSim Home Screen if NetSim system files associated with the current workspace are missing or corrupted.
Some of the reasons why this error occurs are listed below:
1. Importing NetSim GitHub File exchange project repositories that were downloaded as an archive (zip)
2. If the *.nsf file present in the workspace directory is missing.
3. The workspace directory was manually moved/renamed/deleted.
Methods of resolving this error:
1. GitHub repositories of NetSim should not be downloaded as an archive and instead should be cloned. Visual Studio which is the recommended development environment for working with NetSim source codes can be used to clone repositories from GitHub.
Refer: How to clone NetSim file exchange project repositories from GitHub using Visual Studio?
Other tools such as GitHub Desktop, SVN Client, Sourcetree, Git from the command line, or any client you like to clone the Git repository.
2. NetSim workspaces contain an encrypted NetSim file (*.nsf). For Eg:
If there is no *.nsf file present in the workspace directory, it can be manually generated using the Nsf-generator.jar that is present in <NetSim_Install_Directory>/bin folder as explained below:
1. Open the command prompt and change the current directory to <NetSim_Install_Directory>/bin path.
2. Run the Nsf-generator.jar file using the command:
<path of java.exe> -jar Nsf-generator.jar
NetSim install directory has a JRE folder that contains java version that will be compatible with the Nsf-generator.jar file.
For eg:
Note: You can also double click on the Nsf-generator.jar file present in <NetSim_Install_Directory>/bin path. This will load the NSF Generation Utility if java path is properly configured in your system.
The Nsf-generator.jar when executed, loads the NetSim - NSF Generation Utility as shown below:
The location of the workspace folder needs to be located for the utility to create a *.nsf file.
3. If the workspace folder was manually moved, renamed or deleted you can undo the changes back manually or delete the entry of the missing workspace from the list of workspaces (Open Simulation -> Workspace Options ->More Options) in NetSim as shown below:
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