I’m not sure if this was going to be fixed in 5.5 or not, but it is still broken in the final Beta.
When I dbl-click on an error number (in SQL Editor or Pkg Editor), the Oracle Error information window pops up saying the Oracle V10 Server Messages.rvx not found. I only have messages for 9i loaded. I can change the DB version to 9 and it gets the message. But reverts back to looking for 10 on the next error.
Also, can the window be larger when it opens? Most of the messages and explanations are larger than what can be viewed.