Turns out that the latest version of Java (6u29) isn't compatible with Microsoft's JDBC driver. So, our LOB software is failing to start on Macs. I need to roll it back to a prior version, but have no idea how to do so.
Your only option is to do a system restore/reinstall. Not a pleasant alternative, I know but that's what you're facing.
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I don't know about rolling back updates but if the problem is with a version of Java that is incompatible you may be able to fix it with this method. We use kodak software that won't open if you update java through Mac Software update. To fix it I downloaded Java 1.5 and open it with freeware Pacifist, you then go to your hard drive, System, Library, Frameworks, JavaVM.framework, Versions and delete the two aliases for 1.5 and 1.5.0. Then in Pacifist navigate to Contents, System, Library, Frameworks, JavaVM.framework, Versions then select 1.5 and 1.5.0 right click and Install to Default Location. After that the application opens fine. Hope this helps.