There are a number of issues with the Syntax Manager since Gamma 1. If build 003 doesn't fix them all for you, you might have to wait for another release. I don't think you will really need to access the manager, however. Most people have only used it to disable TABLE because vBulletin started shipping with one after VaultWiki was created, and also to enable some BB-Codes that were ported from NuWiki. I don't believe either issue applies to you. Otherwise, it is mainly used for FAQ management, and Gamma 1 also broke the FAQ anyway.