Logic Pro 8 Audio spikes

I hope this isn't related to the Big Endian, Little Endian codec voodoo. There are sometimes audio file incompatibilities with PT. Rare, but it does happen.

Are you saying that there are pops and clicks when the audio is brought into PT, but not when it is in Logic?
doug 'n' bob, the problem lies squarely with me :-(

This particular project recorded audio at 48000kHz and other, concurrent projects are recorded at 96000kHz, and I had simply forgotten to revert RME Fireface to the correct sample rate when I bounced the individual tracks for this project. So they worked perfectly whenever I back-downloaded them, but spiked at the other end. I had assumed that you couldn;t actually do that ( project one rate, interface another) so the mere fact that it seemed to work on my system made me complacent
Glad you figured it out - and thanks for sharing the solution. Not the first (nor last) time this happens to someone. I never would have thought of suggesting that so I learned something as well.