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AR# 22559: 8.1i ISE - When simulating an XPS design, the top level system_stub.v(hd) source disappears from Sources window
8.1i ISE - When simulating an XPS design, the top level system_stub.v(hd) source disappears from Sources window
When running a ModelSim simulation process on an XPS design, the system_stub.v disappears from the Sources window. It cannot be added again because it is still part of the project.
The script associated with ModelSim processes is incorrectly overwriting the system_stub file. This causes a disconnect with the Project Navigator sources reference and the file is removed from the sources view.
This issue is fixed in the latest 8.1i Service Pack, available at: