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javascript error when open firefox

  • 3 replies
  • 4 have this problem
  • 5 views
  • Last reply by cor-el

dopps12
dopps12
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When I try to open Firefox, I get a long pause and then this error message: [Exception... "Could not convert JavaScript argument arg 0 [nsISupports.QueryInterface]" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: chrome://searchshield/content/overlay.js :: InitSDK :: line 473" data: no]

Firefox then opens. This does not occur with Internet Explorer. This just started happening today. What is this, and how do I fix this? I am just a regular user, not a tech person. Thanks.

When I try to open Firefox, I get a long pause and then this error message: [Exception... "Could not convert JavaScript argument arg 0 [nsISupports.QueryInterface]" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: chrome://searchshield/content/overlay.js :: InitSDK :: line 473" data: no] Firefox then opens. This does not occur with Internet Explorer. This just started happening today. What is this, and how do I fix this? I am just a regular user, not a tech person. Thanks.

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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This issue is caused by the an AVG extension probably AVG Security toolbar.

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

dopps12
dopps12 Question owner
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Thanks, cor-el. The problem went away once I was able to uninstall AVG 2011 and install AVG 2012 (the free version), which took a couple of tries (and lots of time). If it reoccurs, I will give your solution a try--so thanks for giving me a backup plan.

cor-el
cor-el
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You're welcome