I had some work come through where I needed to revisit some AE v5.5 projects. But CS5.5 or CS5 wouldn't open them. I had to reinstall my AE v7.0 to open them. Then I used CS5.5 to open the AE 7.0 project. (And I would have been screwed if I was using Lion because there's no Rosetta to run AE 7).
I vaguely remember a chart showing what versions can open up what. I'm assuming this is a 64-bit issue?
I've never seen a chart, but each version of the Help document says what can open what.
Here are the relevant notes from After Effects CS5 and CS5.5 Help:
Note: After Effects CS5 can open and import After Effects projects created by After Effects 6.0 and later.
Note: After Effects CS5.5 can open and import After Effects projects created by After Effects 6.5 and later.
> I'm assuming this is a 64-bit issue?
It's a development and testing issue. If we say that something works, we test the bejeezus out of it. If we attempted to keep project import back to After Effects 1.0 projects, we'd have to spend a lot of testing time (and some development time) on that, and that would keep us from developing and testing new features. And we know that the rare cases in which people do need to open very old projects can be dealt with by the workaround that you used.
Not too long ago I went through my archives and updated the most important compositions by following the same procedure. Some went all the way back to AE 3.1. I think that was 1997. Some of the folks I've helped on this forum were not even born then.
This is a minor disaster for me. I've come from 5.5 to CS6 and need to open old project files. I'm on Lion which is why I've had to come to CS6 - 5.5 won't run on it anymore.
Answers on a postcard please.
I'm running CS4, CS5, CS5.5 and CS6 on the same Mac running Lion but I think that's as far back as it goes.
The jump fro AE 5.5 to CS6 is a long one. You'll have to find a computer somewhere that's running CS4 which should, if I remember right, still open AE5.5 files. If CS4 doesn't do it I'm prety sure CS will. Without that intermediate step there's not much of a chance of getting these files open.
It's a lot like trying to find somewhere to playback a 2" Quad video tape to pull down some archival footage. It can be done, but it is a pain in the neck.