garage band wont work, need to install midi or audio drivers?

Of course you can install leopard, leopard will even run on G3 ppc mac.

You error message sounds like your having a problem with a third party diver. What audio or midi hardware do you have connected.

Im having the same problem, I upgraded my IMAC and was using tiger and I upgraded it to MAC 10.5.7, now GarageBand wont work saying my midi and audio drivers arent correct. My Reason 4.0 wont start either saying the same thing failed to open the midi library. My Protools works fine but I dont know how to update the audio and midi drivers that it matches the software I uploaded. I also went to the audio midi set up and it read, Audio MIDI Setup was unable to launch the MIDI Server. This means that you will be unable to view or edit your MIDI configurations.

Improperly written MIDI drivers can prevent the MIDI Server from launching successfully. If you have recently installed a new MIDI driver, try uninstalling it and then relaunching Audio MIDI Setup. If Audio MIDI Setup works correctly after that, then please contact the driver's manufacturer for further support.

I tried to do a combo install update for MAC 10.5.7 and that didnt help the audio midi part of the problem , so garage band is reading what it says below.



Be sure to install the latest drivers for all audio and MIDI equipment connected to your computer. For instructions on removing older drivers, consult the manufacturers' documentation.GarageBand has detected a possible conflict between one or more third party MIDI or audio drivers.

I'm having exactly the same problem, did you ever manage to solve it? I hope so. Please let me know if you did/ do.