After updating java to 7u65 (from 7u60) one of our java web start applications will not launch.
The error I get is 'Could not find main-class ... in jar'
I read through the release notes and bug fixes for 7u65 in addition to searching on SO to find any information. I have not found any documentation that would explain why this worked fine in 7u60 but not 7u65
I had the same issue. solutions:
Move the jar which contains main class on top, or
add main="true" for the jar which contains main class