.aif could not be opened -- but why!?!

[poage]

Hello, a friend and i are trying to swap sessions and work out of both our studios.. He has a PC running Live 8.0.3 I have a Mac G4 and a maudio profire running Live 8.2.1. I just downloaded live 8 upgrading from 7 last week to make sharing a session possible.. When I load the session from my friend everything comes up fine, i can edit and mix but when i try to enable a track or sometimes even select input source or save the session it says "...aif could not be opened" and will not allow me to proceed. Any ideas?!?

I know the aif files are there.. I can navigate to them and besides it will do this for a brand new track i create and when i go to enable it it says the aif file for that new track i just created can not be opened.. I dont get it.

Thanks,
Chris

[Ableton_David]

It could be that the aif file is part of a protected pack, from an add-on or Partner Instrument that you don't own. Have you checked with your friend about this?

[shogunz]

ik got a similar problem !

when i press the record button on the channel strip, i get the same error. dont know what to do about it !
i hope somebody can help me. thanks!