How to trouble-shoot a problem with a plugin monitor
A plugin script is launched by the Data Gathering Engine. The script is launched from TRAVERSE_HOME\bin; that would be the launch directory.
Is the perl script using any specific libraries? If so, please ensure that the perl script has references to the libraries based on a home directory path of TRAVERSE_HOME\bin
Also, for troubleshooting purposes, you may consider launching a .bat file and call the perl script from within the .bat file. The perl script should be launched redirecting the stdout and stderr to a file. Inspecting the file should provide some clues.
Please also ensure that the DGE component is restarted if any changes are made to the script.
All Traverse versions
Also see Troubleshooting why the scriptmonitor sub-component stops responding