Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

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

TypeError: Components.classes['@browserhighlighter.com/Shim;1'] is undefinedHow do I correct this,

  • 2 (ردّان اثنان)
  • 2 have this problem
  • 7 views
  • آخر ردّ كتبه kobe

more options

This error pops up with every window. I thought it was Java script problem. I don't know which java update to delete???? What do I do?

This error pops up with every window. I thought it was Java script problem. I don't know which java update to delete???? What do I do?

الحل المُختار

This issue is likely caused by an extension that isn't working properly.
In this case "The Browser Highlighter 1.0.26486" that shows in your System Details List.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.
Read this answer in context 👍 1

All Replies (2)

more options

الحل المُختار

This issue is likely caused by an extension that isn't working properly.
In this case "The Browser Highlighter 1.0.26486" that shows in your System Details List.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.
more options

You may also want to remove that TopArcadeHits addon as its considered as malware.

refer to Mozillazine: http://forums.mozillazine.org/viewtopic.php?f=38&t=2711837 This site: https://support.mozilla.org/en-US/questions/960863