So, you've opened the Composition Settings dialog box, entered 30:00 in the Duration field, clicked OK... Then what?
Please file a bug report (aebugs at adobe dot com).
Oh, and have you applied the After Effects CS4 (9.0.2) update?
Thanks for the response.
The problem is that the duration dialog box is dead. I can't enter any
numbers in it. Totally unresponsive.
But everything else in Composition Settings works fine.
I have put in all the updates. No difference. Have also reinstalled twice.
nothing is locked. A real puzzle!.
I'm beginning to suspect that the problem is compatibility with windows 7 64 bit..
I can run AE CS4 on a Vista 64 partition just fine. Everything in composition settings, including the duration dialogs. workks as it should.
Is anyone else having problems with an up to date version of Win 7 Ultimate 64?