The Data Protocol Handler Filter does not open.

Document ID : KB000007950
Last Modified Date : 14/02/2018
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Issue:

Not able to open a Data Protocol Handler in the VSM Listen step under Filters.

When selecting a DPH filter, nothing happens.

Environment:
All Supported DevTest releases.
Cause:

It is possible that a new jar file was added to $LISA_HOME/lib folder and is not playing well with DevTest, causing the issue.

Resolution:

When looking at the Workstation log files, exceptions like ClassNotFound were being generated and referring to an external jar file.

Removing the additional jar file from $LISA_HOME/lib folder and restarting the Workstation resolves the issue.

The custom extension needs to be reviewed.