PT7 Rewire overload issue

[DrBackshots]

Hey guys. Here's my dilemma. I'm running PT7 on FW1814 and Ableton Live 6, Apple G4 laptop and 1GB of RAM. I'm trying to run rewire from Ableton to PT but whenever I set everything up and am ready to record PT gives me a message saying I need more power. I've gone to the playback engine and set everything as I high as I can but still no dice. Not to mention the fact that I used to run rewire in the past and never ran into this problem. The only thing that I think may be the problem is the fact that in Ableton the CPU meter runs pretty high when I'm working on the music so I don't know if it's because of that is why PT is saying I need more power. But if anyone has any suggestions or can shed some light on the issue it would be greatly appreciated. Thanks.