Prepar3D v4 will not launch

[MarkN1232 1]

I've installed the hotfix on P3Dv4, uninstalled the client, then downloaded and reinstalled the "new" client. When I  open P3D I get the initial Prepar3d logo and the spinning wheel of death. It acts like it wants to open then just disappears. When I go to restart the computer it says P3D is running, however its nowhere to be found on the desktop. Tried opening and restarting multiple times with same result. Never seen this before.

[MarkN1232 1]

Prepar3D v4 Professional 4.0.28.21386

 

Could not write value Complete to key

\Products\192A359C5D0CE414281177D8E5357DA3\Features. Verify that you have sufficient access to that key, or contact your support personnel. - occurs during initial setup.

Then is gives the option to "abort" "retry" or "ignore". If I hit ignore P3D will not open. Have uninstalled and reinstalled the program several times. Worked fine before I attempted to hotfix. Any ideas??

[WarpD 824]

Go to Lockheed-Martin's forum and get assistance.

[Poppet 710]

Hello Mark

I have merged your 2 Topics together

I have responded to your post on the LM forums.    Your Issue of  "Could not write value Complete to key"  can be a tricky one,  We will start at the bottom and try and work our way through it.