When you run pIR this way (project file empty, output empty), what is showing in the “Current Movie Settings” section (top line only — AVI. Second line is for WMV). Please let me know what it says so I can try to install it here and duplicate the problem.
Whatever it is, is it a codec that you normally use? Do you have other apps that you use to save AVIs? If so, select that codec in other apps and see what happens.
If it’s not a codec that you normally use, I’d suggest removing it. If you installed it as part of a “codec pack” you may be able to uninstall it. If not you can use a tool like Codec Sniper to remove it.
There are so many codecs it’s not possible for us to test all of them (of course). None of the beta testers had any of the problems you’re having though (wish they did).
Also, the “render” button should not be enabled until both the project file and output fields are filled in. I have noticed that under some conditions this is not the case, but I recommend not pressing “render” until both project and output are filled in.
Alan.
http://www.wondertouch.com