This messed up my Chrome Flash. I had "Could not load shockwave flash", and that nice looking grey thing.
Went on to google it, tried several things.
- chrome setting, something needs to be disabled (when you have 2 plugins)
- delete some files from some flash folder on C drive
- uninstall plugins, reinstall them
I finally uninstalled chrome, and reinstalled it. I didn't lose anything. Browsing history, shortcuts, home page, extensions (even an extension that is no longer in Chrome app store).
Flash also worked flawlessly after this.