At long last, we at Boris FX are happy to report that Boris RED v4.1.4 transitions are working as they should in FCP version 6. We tested RED v4.1.4 with FCP v6 on both Power PC and Mac-Intel and both are working as expected.
After you've updated to FCP v6, all you need to do is download and install the "RED 4.1 for Mac Intel / Power PC and Windows" patch found here. http://www.borisfx.com/updates/#red
This will work with both CD and Try and Buy installs of RED. In our testing, we found that we did not need to delete the Final Cut Pro Obj Cache file. If for some reason FCP v6 does not see the RED transition after updating both FCP and RED, try deleting the Final Cut Pro Obj Cache file. If after that you are still experiencing problems, contact us in Boris tech support at http://www.borisfx.com/product/support/form.php
Also, we at Boris FX would like to thank all at Apple who made this possible.
Thank you once again for your patience and cooperation,