License Check failed - Failed to source TCL file
In *iTest*, a previously-working test case was failing a test step in a *Spirent TestCenter CLI* session.
**STEP:**
command stc1 source project://.tcl
**ERROR:**
RuntimeError in perform: There were 1 validation error(s); aborting apply.
License Check failed
Failed to source TCL file
OK. I posted the question as well as a solution. But now I have another question: What could be the root cause of license check failure? The reason I ask is because this failure has reappeared again on another machine and another set of STC cards.
Best Answer
**WORK AROUND:**
Reboot your port groups. I did this from within *Spirent TestCenter Application* menu:
1. From the menu, click **Tools/Equipment Information...**
2. Make sure the desired chassis is highlighted and click on the [**Port Group**] tab.
3. Click on the port group, then right-click and select **Reboot Port Group**.
