Avalanche: When load package in Tclsh, why meet error 'An instance of Avalanche is found to be running'?

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Avalanche: When load package in Tclsh, why meet error 'An instance of Avalanche is found to be running'?
When you load Avalanche package in Tclsh, one Java.exe process is running background in the OS. Each time, you can only run one automation in the same OS. Sometimes the automation is crashed or not correctly closed, the java.exe process is not killed, need to manually kill it first before you can open another automation.