[TxMt] Can't open .rxml files in TextMate?

So I'm trying and trying and just can't seem to get .rxml files to open (in Version 1.1b11)... not at all! I checked the file association and I've set it to TextMate, but it won't let me drop the files on its icon nor click to open them from the drawer. It's very strange.

By the way, the .rxml files are for Rails, so they're basically Ruby code. I did eventually get ONE .rxml to open in tm (but only one!) and it didn't take on the right formatting, so maybe the program isn't aware of them at all? Just kinda weird.

Any ideas on how to get these files to open?

Best, Raymond