The recent release of BrightAuthor version 126.96.36.199 included a complete rework of cable tuning on the XD1230. Instead of manually entering channel parameters into Presentation Properties, you now instruct the player to scan the signal source for channels. The interactive options of the RF In state have also been completely revamped: You can have the state behave similar to a traditional cable box (allowing the viewer to flip through channels) or as a media item in an interactive presentation.
As a result of these changes, presentations containing RF In states that were created in 3.5 versions of BrightAuthor are incompatible with newer versions of BrightAuthor. If you want to use new versions of BrightAuthor with these presentations, you will need to rebuild them using BrightAuthor 188.8.131.52 or later.