Can't see WAV waveforms when zoomed out

[nob turner]

I'm working on a project where I import WAV files recorded on another system to mix in PTLE on an 002. I'd been having the DAE -5000 error problem, which didn't allow PT to draw waveform overviews, til i checked the "Ignore Ownership" option in the Get Info box for my hard drive. Now the WAV files have waveform overviews... but they are only visible when I am zoomed in to about 3 Sec. full-screen. Once I back off further than that, the overviews disappear and I have blank boxes for each audio file. When I try to recalculate the overviews, I get the -5000 error again (You do not have necessary access priveleges).

I don't have any of these problems when working with SDII or AIFF files recorded on this system.

What is wrong with this picture?

PTLE 6.4 cs9
Dual-867 G4
OSX 10.3.4