Well, someone must have figured out how to create RTB files, because I believe the last version of SKick that the author worked on was 3.43. Assuming I'm not mis-remembering things, the versions since then have just been to add more RTB and PAT files.
One more idea: Since 2.04 and 2.05 are so similar, can you rename the RTB from 2.04 and see it it works?