When we released this beta we realized testing is never done and a feedback mechanism would be needed! To get us what we really need to investigate your issue we created a mechanism within SuperPreview to generate a 'copy' of your website experiencing issues,couple it with our settings objects, any errors, and the DOM information gathered. This data package can really help us pinpoint your problem, so if you can take a few seconds to learn the process we sure would appreciate it!
To go down this route (and help us track and fix your issue) you can follow these steps:
Click the bug icon in the toolbar:

You will see UI ala the following:

Click Create Attachment

Click copy path (so as the ZIP file created is on your clipboard)
If you would like to know just what is being packaged up click the View Attachment button (available after clicking Create) and Explorer (or your registered ZIP extension handler) will allow you to view the contents. If you are OK with sending the package to us just log onto MSConnect and make sure you add the file as an attachment. If you have troubles let me know and I can see about an offline email address for you to submit!
Enjoy our Beta