BBcode Editor - Unable to Load Composer

When using the BBcode editor, more times than not, it will not load and I get an error message: "Unable to load composer." I've tried several browsers including Chrome, Firefox, and IE.

What can be done? Thanks. -- Rik

PS: I'm using the latest version of EasyDiscuss and the other editors (JCE, etc.) work fine although I don't want to use them for formatting reasons.