I moved the License & related files around to find the only combination that works with my copy of RS Pro.
There are three files involved:
(1) License.xbin
(2) data.xbin
(3) Default License.xbin
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(1) goes in the main RS Pro folder (e.g., "C:\Program Files\RegSupreme Pro" on my PC). It can also be put in the Data subfolder, but gets copied to the first location during license validation.
(2) goes in the Data subfolder. License validation fails if it is not there. I think it is originally put there during the install procedure.
(3) I found this is not needed (it's probably an old trial license).
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Hope this helps ... good luck! :