Hi Michael,
In your 5250 session, check under the Communication>Configure menu. Confirm that the "Workstation ID" is blank, or click the "Generate" button and confirm that the "Avoid duplicate names" checkboxes are checked. Personally I prefer to just use the "Specify workstation ID" option and keep the workstation ID blank. I never have a problem getting a device name this way. If something has been hardcoded into that field, and the checkboxes are not checked, you will only be able to run a single session.
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Steven Riedmueller
Certified IBM i Admin
Speaker, Mentor, and Advocate
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