HT5559: Java for OS X 2013-005: How to re-enable the Apple-provided Java SE 6 web plug-in and Web Start functionality.Learn about Java for OS X 2013-005: How to re-enable the Apple-provided Java SE 6 web plug-in and Web Start functionality.
Currently Being ModeratedFeb 11, 2013 3:47 AM (in response to Hate when you ask for personal details)
Read this thread https://discussions.apple.com/thread/4789691?tstart=0
This fixed the issue for me:
sudo /usr/libexec/PlistBuddy -c "Delete :JavaWebComponentVersionMinimum" /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist
In the comments to the linked article someone suggests to comment out the node in stead of deleting it. Probably safer (it's explained further down how to do that). Anyway I already spent to much time on this nonsense, deleted it and it worked, so I'm happy.