Hello,

   Please see the following link for more information:

  Java /Vista errors with Line 6 Edit and Workbench

  http://line6.com/community/docs/DOC-4497

  Please let us know if you need further assistance, or close out the ticket as “answered” if your situation has been resolved.

Here's the link...

http://java.sun.com/products/archive/

Just go to the "Java Platform Standard Edition (Java SE)" subheading, and then select JDK/JRE 5.0. Once you are on the next page, select JRE (don't think JDK would work, only tried JRE, and it works for me). After which, just fill in the form, then an email will be sent to your nominated email account, to link you to the proper link to download 5.0. All you have to do from then is to download the file, and then install it. Workbench should then run as it should, without the error message you got. Had the same problem, but I figured out how to fix the problem. Hope that helps...