Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

i reinstalled hoping it would get rid of the error message that pops up each time i open it TypeError: Components.classes[cid] is undefined

  • 1 cavab
  • 2 have this problem
  • 2 views
  • Last reply by TonyE

more options

When I open up Mozilla i get this error message--TypeError: Components.classes[cid] is undefined also when i am working on my real estate web site and pull up a name i get the same messag. At the top it always says-- Java Script Application

When I open up Mozilla i get this error message--TypeError: Components.classes[cid] is undefined also when i am working on my real estate web site and pull up a name i get the same messag. At the top it always says-- Java Script Application

All Replies (1)

more options

That error is caused by an incompatible/malfunctioning add-on. To identify the culprit follow the procedure in the troubleshooting extensions and themes article. One add-on that has caused this error for some is AVG safe search.