install

[gbapache]

I am at a lose here. I've never heard of FSP interfering with FSX starting up.

[whiskey-zulu]

Sounds like another one for the .dll file to be changed.

[Joeflyer]

Seems like too much thinking for me. I'm tired already. Beer time.

[Recon]

This one is for Sky

And did you try to un-install everything including FSX reboot your computer and re-install everything?

So first,...FSX re-start computer then FsP start FSX and then add-ons.

[rukiveer]

Maybe your dll.xml is corrupt. Go to user\appdata\roaming\microsoft\fsx and copy dll.xml file somewhere and then remove it. After that reinstall
FSpassengers and see if it works.