onflict Catcher 3 is a commercial package enabling you to solve all your extension problems. It will run all sorts of tests and load them in different orders to try and find the bad ones. It also gives almost all the options of Symbionts.
nfortunately, it has its bad points as well. The interface is more like Extensions Manager in that there are no icons. This means it lacks the visual appeal and the ease of use the symbionts offers and although it is more powerful, its numerous options are daunting on first sight.
demonstration version (useable for 3 days) can be downloaded from here, along with a much better guide to what it can and can't do and a screenshot or two. It is about 300k when compressed on the internet and the full version retails for about $100.
he demonstration version is fully functional, and if you register, you get a serial code that will take off the time limit without having to get new software.