I get next message at startup Chaseplane:
Configuration changed
ChasePlane works best when your "WideViewAspect" setting is enabled.
We have modified your fsx.cfg in FSX to reflect that.
If your simulator is running, make sure you enable it in the simulator's preferences
or restart it to apply the change.
FSX is not installed only P3D V3 and FSX-SE.
After ignoring this message Chaseplane and P3D work as normal.
Greetz
PC