Logic Pro 9.1.6 string samples missing

Question

I have purchased Logic Pro 9.1.6 from the App Store and downloaded all the additional content. But there are some samples missing, most of the string instruments in section "10 Orchestral -> Strings" and also in the Symphony Jam Pack the most of the String samples can't be found by the EXS.
I have downloaded and reinstalled the Symphony Orchestral Jam Pack as well as the 4,6gb additional sound files, but that didn't help.
There is also a problem when I try to load Organs from the Symphony Jam Pack. An error message pops up saying "Logic Pro: Plug-In „Pipe Organ“ not available!"
Any suggestions what I can do to fix the problem?
Best regards,
Andreas

Answer 1

I finally got the time to sit down and tackle the problem. This happened to me after a hard drive replacement by Apple. For whatever reason (and there seems to be many). Certain samples and instruments don't re-load under the later Logic Pro 9 updates. Here's how I fixed it. Brute force.
1. Download a freeware program called Pacifist. It allows you to extract contents from packages. Open the jampaks with the missing files (2 and 4 are the big ones with missing samples... 1 and 3 have a few).
2. This is tedious. Most missing instruments are from Jampak 2. Use pacifist to open Jampak 2 and copy the missing sample files back into HD=>Application Support=>Garage Band=>Instrument Library=>Sampler=>Sampler Files
3. Copy over the other jampaks as you see fit.
You can copy the entire contents or do like I did and replace the missing folders or patches. For some reason all the legato samples and the "RS" samples (articulations, i suppose) won't replace themselves EVEN IF YOU RE-INSTALL THE JAMPAKs in their entirety.
It ain't pretty, but it works. Good Luck!