You can set breakpoints in and debug model plug-ins like in any other sequence. However, if you create a result processing plug-in and the plug-in returns errors only when the TestStand Offline Results Processing Utility invokes the plug-in to process a TestStand results (.tsr) file, you cannot debug the plug-in from within the utility. For debugging purposes, you can process a .tsr file from within the TestStand sequence editor by invoking the Process Results File [for testing and debugging] sequence in the NI_OfflineResultsGenerator.seq.

The sequence processes the .tsr files you select with the <Default for Offline Processing> configuration. Edit the value of the Locals.OfflineProcessingConfiguration variable to specify a different configuration.