Posted: 09/10/06 - 04:00 Post subject: Mozilla missing xpcom_core.dll
I'm getting an error message from Mozilla Firefox when trying to play a FLV file on youtube.com. The message says something along the lines of "FF can't run because of a file called xpcom_core.dll. Is this some sort of a virus attack? Or is this file missing because I somehow deleted it? What can I do to set things straight? TIA.
It's definitely not a virus attack, and this issue has occurred on occasion in certain Firefox builds. Are you using a non-standard version of some kind? I would suggest you download and install the latest official build (which I believe is 1.5.0.6) from mozilla.org. Make sure it's a fresh install and not an update of your existing one, just to be on the safe side here.