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This FAQ answer is obsolete but preserved for historical interest.
This can happen when you've installed the Trial version, installed a full version, then uninstalled the Trial version.
1) Go to the Add / Remove Programs Control Panel
2) Select PowerMapper in the list of installed programs
3) Select the Change button
4) Select the Repair option in the Setup wizard
Applies To: PowerMapper 4.0 to 4.19
Last Reviewed: Feb 11, 2015