407 Error The specified serial # not valid in S550 Citation II for FSX | P3D Posted March 31, 2015 Same thing for me. I had it with the pa32 with no solution. Now this... same installer. Hoping for a solution soon.
407 Error The specified serial # not valid
in S550 Citation II for FSX | P3D
Posted
Same thing for me. I had it with the pa32 with no solution. Now this... same installer. Hoping for a solution soon.