Hi guys,
I successfully installed RF3.5, Expantion Packs 1-3 and Add-Ons volumes one and two to Windows Vista on my new PC.
However when I try to install Add-Ons volumes 3-5 I get an error message that the RealFlight control panel has stopped working.
What's up with this?

Several things are known to cause this:

1 - AOL, and other anti-spyware software
2 - Add-in Theme Managers
3 - Not installing from an Administrator account
4 - Windows Vista DEP protection on -SOME- OEM computers
5 - Not using the "Installation Fix" ( you must use this ) found on the KE FAQ pages.

Thanks opjose.
I finally got the Add-Ons discs to install, I can't remember exactly how, it was something KE suggested. All is well now. However I notice Vista IS very fussy about having a fast video graphics card, eh? Mine works well enough if I turn down the graphics quality.