Hi folks, if you're using Chrome and you're seeing this message, please do the following:
1. Open a new tab/window of Chrome.
2. Type in the following in the address bar:
3. Look for Adobe Flash Player through the list of plugins.
4. Disable one of the two flash players - preferably the adobe one as Chrome will no longer support it after a few updates, while their own integral Pepper Flash will still be used.
We have not been able to fully reproduce this issue but I believe a conflict between the two is likely the culprit in this case. If you're still experiencing that error message afterward please do fill in a bug report so we can investigate the issue more thoroughly. Thank you!