Dears,

 

I bought the new computer with Windows 8.1 and PMDG738 NGX. I run the FSX as administrator and PMDG aircraft. I click the FMC box and key in some data (e.g. route). Once I completed the data input and return to normal screen, I can't use "Spacebar" and Mouse mid key for zoom in and out. Anybody has the same problem and would you please share with me how to solve?

Thanks

 

You probably left the CDU in "Keyboard entry" mode...