If the version on your disk is after 5.5.x.x, then you only need to apply the latest patch which is "version 5.7.x.x to 126.96.36.199" which you can find here http://www.aerofly.com/downloads_en.html
Which version do you see displayed on the left bottom corner of your AF5 startup screen? If it is version 188.8.131.52, then I guess it is fine. If you encounter any problems, then just uninstall AF5 and re-install it, then apply the latest patch.
Only models and sceneries designed for AF5 are compatible. AFPD models cannot run in AF5 due to coding differences.