The ClockController.Seek method was called using TimeSeekOrigin.Duration as the seekOrigin parameter for a Clock that has a duration of Forever. Clocks that have duration of Forever must use TimeSeekOrigin.BeginTime.
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English version
The ClockController.Seek method was called using TimeSeekOrigin.Duration as the seekOrigin parameter for a Clock that has a duration of Forever. Clocks that have duration of Forever must use TimeSeekOrigin.BeginTime.