Problems installing Adobe flash plugin for Opera

Hi all,
I have tried a number of times to install the following Flash plug-in for Opera.

Adobe Flash Player version 10.0.45.2

But, it is not working. It says the installation has been successful.
I am restarted the PC, but it still says that it needs the new version.

The PC is Windows 7.

Anyone seen this, or have any ideas ?
Thanks

Yes, I've have that problem.
I couldn't watch youtube etc.

Try upgrading Opera to 10.50 (I'm using build 3296)