[chance norris] “I have been experiencing Image Buffer Errors on export and during previews with version 7.0.”
ae7 is only powerpc based, so if you have an intel-mac (macpro, mackbook, later imac, etc), ae7 has to run under rosetta (powerpc emulation). i would guess that apple is less concerned with rosetta working well with later os versions and updates, it was just a stop-gap for a period of time until intel-native versions of software was available for intel-macs. so that may be your problem with ae7.
there was also a long set of things to do to get ae7 to run well on intel-macs… reduce the max memory usage drastically (like from 120% to 60% or 30%) and the ram cache from 60% to 30% or 15% respectively), disable opengl and avoid using the bundled cc effects… even after those i still saw frequent image buffer errors that were not fixed until the intel-native cs3.
[chance norris] “Just downloaded trial version of CS4 and now can’t preview in realtime on playback. Preview plays at 5 fps.”
if you are hitting zero on the numbers pad for ram previews, then the only thing i can think of for slow ram preview playback is that you are playing back through a video output card (decklink, aja, etc) and there are some setting that need to be tweaked to get realtime playback (or just set video preview to montior only).
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW