Addon #2

[modelflyer]

I installed addon # 1 no problem
started g3.5 and it said something about it found
that i had 1 and or 2 and was ready
i looked and planes were there from addon # 1
i shut 3.5 down installed addon # 2 and restarted 3.5
did not get the message about addon 1 or 2
looked for addon 2 planes and they were not showing up

i thenn installed addon 3 and everything on addon 3 shows up
still no addon 2

is there a way to force 3.5 to do the refresh it did when i installed addon 1?

i tried the restore defaults and re install # 2 but still nothing

Thanks