Garageband '11 effects (ex: "Chorus") are missing and I cannot select them... UNLESS they are a default effect in the selected instrument.

Context: I recently bought a new computer, used migration assisant to migrate over all my old apps and files and settings, and download and updated the new garageband (2013 version). I noticed that the defult garageband effects (the built in ones, not the audio units) were missing (and i hear this is the way it's supposted to be). But I want to keep using those, so I decided I would just keep on using Garageband 2011.

But in the 2011 version, the effects are missing too. I cannot select them as new effects. I CAN however edit existing effects IF that effect is included by default in that particular insturment. Look at these two pictures for an example:

http://imgur.com/a/eRLl3

In the first picture you can see that I can select "chorus" while in this organ insturment, since it's included by default. I can even change different presets within chorus. I CANNOT however, select any NEW effects to ad to the organ from GarageBand's defaults. As you can see in the pictures, when I click on effects where the chorus is, only chorus shows. When I click on an empty slot to ad a completely NEW effect, no default effects show up at all, not even chorus, even though I clearly can use in the other slot.

I tried trashing my preferences.

Any help please? I've been working on some of this music for almost 2 years, and I'd hate to be stuck because of a technical error.