Install another Office 2007 B2TR product - Error GraphicsFiltersCDRFilesIntl_1033
Several people are complaining it's impossible to install another Office 2007 product on your machine when you've already updated the previous to B2TR. In a few screenshots I'll show you otherwise. In this example I'm using Project Professional 2007 as the second product to install. Of course I slipstreamed my product, so it will automatically upgrades the Beta 2 to B2TR. For a complete reference about slipstreaming watch the screencast on the Dean's Office. This screencast is based on WSS, but is pretty much the same for all other products.
When you try to install Project for the first time with the default settings, an GraphicsFiltersCDRFilesIntl_1033 error will occur. The screens below shows you an exact dump of the error.

Error GraphicsFiltersCDRFilesIntl_1033
To get rid of the error you have to disable all Converters and Filters. These are already updated by B2TR of your first Office product and other Office Beta 2 product isn't able to discover these updates. To disable this option you have to select Customize in the startup screen.

Disable Converters and Filters
When you have disabled the Converters and Filters option and slipstreamed your product, it will automatically update it and installs it successfully.

Successfully installed product
Summary
Microsoft isn't able right now to discover it's own updates. I hope this 'feature' is resolved in Office 2007 RTM.