QuickTime Failed to Initialize in Mozilla firefox

Hello TechyV buddies!
I have encountered some problems about Mozilla Firefox. It tells something about an error on QuickTime. When clearing all the browsing history, cookies, cache, active logins, site preferences, an error always comes out which states the following:
“QuickTime Unavailable
QuickTime failed to initialize. Error#0
Please make sure quicktime is properly installed on this computer.”
And another error states that the script is unresponsive. Can you help me configure these problems? I would really appreciate any effort in solving this. Thank you!
