Lanyo:
Are you using Firefox as your browser?
Pretty sure theres currently an issue with flash + firefox, i switched to the google chrome broswer and its works fine
Firefox has been a bit notorious when it comes to conflicts with Flash any time one or the other is updated. Chrome's had a history of issues as well, but for quite some time now, I've not noticed anything in terms of conflicts after an update.
One other piece is to make sure you've cleared out the Flash Cache when things start going awry. At least in the past, you've also been able to uninstall the current version and install an older version that can help resolve conflict issues.