My Truobles

Ok found my Old CFS3 Disks and having trouble attempting to install ETO/PTO. Downloaded Eto/Pto Expansions and read me files.But cannot get the 3.1a update to work.Number 1 I extract it to the copy of cfs3 but it runs then stops like an error with german text.Cant get the multi tool to read 3.1 found at the top of usser tittle screen. uninstal and reinstal cant get any further.My copy of CFS3 says that is version 3.1.
#2 i dont know if that updater is just to be in there so when it detects the new aircraft that it will update then i am not haveing any luck looks like it would be a really cool addition for ole CFS 3. Hope I am in the right place to post this

Thank You for Your Help if there is any