An invalid XML character (Unicode: 0x8) error on author submit workflow

System

I have created a custom workflow from the visual workflow modeller for our authors to fill out some information and select a 'reviewer' to review and approve their submit. The workflow fails to instantiate only when one specific user is selected from the drop down list. I populate the list of reviewers in the workflow using a custom configuration file. Anyone seen this before?

Error:

Failed to instantiate a workflow model. Click details for more information, or contact your system administrator.

Details:

com.interwoven.modeler.common.exceptions.ModelerException: error: An invalid XML character (Unicode: 0x8) was found in the element content of the document.

custom_instantiation.cfg (offending user is "ECY\bmon461"):





Job_Description:

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Priority:










Reviewer: