Macbook Pro running Mac OS 10.6.8
Software installed I'm addressing:
After Effects 10.5
I'm unable to use any of the Photoshop or Illustrator Extensions or Scripts in Bridge CS5.1, but I am able to use them in Bridge CS5 just fine.
Is there a way to correct this, so I can uninstall the older version of Bridge, Bridge CS5 and get full functionality with the Photoshop, After Effects and Illustrator extensions in Bridge CS5.1?
Bridge CS5.1 can work with Photoshop CS5.1. You are using Photoshop CS5, which can work with Bridge CS5 only. I suggest you upgrade your Photoshop to CS5.5. BTW, this issue has nothing to do with Extension Manager. Maybe you can look for some workaround in Bridge/Photoshop forum.