I have also done the same as you have done that is made the change in the '.actionScriptProperties' file and made the change by htmlPlayerVersion="10.0.12". After this I update my flash player to '10.0.32.18' from http://www.adobe.com/support/flashplayer/downloads.html#fp10.
And its working fine. Pls update ur flash player if you have not updated it.
Pls let me know whether it works or not.
Shardul Singh Bartwal