Just installed Boris red 4 on intel mac. There is no filter selection for it. I can export/import movies to red engine. but i'd rather work from the filter tab. And Yes I held the Caps lock down the first time I launched.
Because the current release of RED 4 is not a Universal Binary application, it will not appear as a filter in FCP on a MacIntel machine. Yes, you can use it standalone operation but as you mentioned, you want to use this as a filter within FCP. We are currently finishing and testing the code for the Universal Binary version and expect to be able to make that available quite soon ... certainly before the end of the year. This will be a free upgrade for RED 4 users.