Labeled Priorities for RT 3.6.3

Has anyone else run into some problems with the patch for labeled
priorities for RT 3.6.3? I am running on Slackware 11.0.0 with Perl
5.8.8 and Apache 1.3.37. The patch ran successfully but the only
visible change that I see is that the Priority are now showing in colors
but not labels. If anyone has run into this and knows the fix or knows
where to begin investigating please let me know.

Thanks to all in advance,