Hi,
a friend of mine hat problems with a SMS of me, too. All spaces where replaced by at-symbols (@). After a closer look I identified an emoji as the problem. And it makes sense for me. This Smiley Symbols are Unicode Keys and I think, that SMS only uses some sort of ASCII Codepage. Or Simple, such a Symbol won’t fit into a SMS.
Maybe your problem is the same. Is it possible to sent a pure Text message to the Blackberry?
regards,
Shiny