I have recently updated my OS X to Yosemite and it said my Flash was out of date. I went to install it and everything was going fine until it
was installing it and it had a message saying it could not install. I've uninstalled all of Flash but still nothing.
ANY helps appreciated!!!
Try uninstalling and reinstalling:
If that doesn't work, check the following:
Control Panel > Privacy and Security
Make sure Allow Apps downloaded from Mac App Store and Identified Developers is selected.