QuickPull Pro no longer works on 5.0.0.591

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QuickPull Pro no longer works on 5.0.0.591. The OS on my 9630 Tour was just updated to 5.0.0.591 today. I uninstalled and reinstalled QuickPull Pro twice. No luck. Every time it I try to start it, it asks for the License Key. I enter the key, and then the program does nothing but shut down. I click on the icon again, and the scenario repeats.