Try to run CDF player with older version of firefox i.e firefox versio 3.4, that might work i guess.
A related note: It seems that CDF Player 9.0.1 doesn't work in the latest versions of Chrome, at least on OSX. This may be related to Chrome's recent transition to 64-bit mode.
Some good news: I got the 10.0.2 update for Mathematica last evening.
Perhaps the new CDF player won't be too much longer. ;-)
PLEASE!!!!!!!
A Premier customer.
PN
See the thread here (not much new there, but it has been raised before...):
http://community.wolfram.com/groups/-/m/t/352174