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having this block coming up for java ,,TypeError: Components.classes[cid] is undefined what do i do to fix this issue

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while downloading fire fox

it requested i update java,, which i did and upon doing so and restarting computer  to have commponates installed ,,this error comes up and will not stop.. box heading JAVA SCRIPT APPLICATION WITH THIS MESSAGE....TypeError: Components.classes[cid] is undefined HOW MIGHT I FIX THIS ISSUE
while downloading fire fox it requested i update java,, which i did and upon doing so and restarting computer to have commponates installed ,,this error comes up and will not stop.. box heading JAVA SCRIPT APPLICATION WITH THIS MESSAGE....TypeError: Components.classes[cid] is undefined HOW MIGHT I FIX THIS ISSUE

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This type of error is typically caused by an incompatible/malfunctioning extension. Try the procedure in the troubleshooting extensions and themes article.

The AVG safe search add-on is one that has caused this error.