Rails & gems 0..9.2 problem

Got a slight issue with a rails plugin I wrote. when I updated to gems
0.9.2, there is some combination of what is happening in rails and gems
that is slightly changing what my array#pack(‘c’) it returning. I
haven’t quite dug deep into this yet, but the plugin that I wrote works
with binary data, when I introduce gems 0.9.2 with rails 1.2.3 I get
problems with the plugin. As soon as I go back to 0.9.0 I’m fine. What
could be going on with rails&gems that would cause such an issue? I’ve
also verified that the plugin core works fine with gems 0.9.2 if not
running in rails. What gem depenancies could be causing this? Any help?