I recently downloaded and installed the SP1 upgrade to the JS4100. The first time I tried to fly it, I got a request for activation. When I supplied the activation from my purchase confirmation (copy and paste), it said that activation failed and that the aircraft would not perform as expected. However, it seems to be OK and it hasn't asked for activation again. Is my installation OK or do I have to reinstall?Steve Bickford

I recently downloaded and installed the SP1 upgrade to the JS4100. The first time I tried to fly it, I got a request for activation. When I supplied the activation from my purchase confirmation (copy and paste), it said that activation failed and that the aircraft would not perform as expected. However, it seems to be OK and it hasn't asked for activation again. Is my installation OK or do I have to reinstall?Steve Bickford

If the product wasn't activated you would see issues. Drop PMDG support an e-mail to be sure.