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Error message appears when I open Mozilla - ''Youtube High Definition: TypeError: aId is undefined 1174''. How can I get rid of it?

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AlejandroMS
AlejandroMS
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This error message is suddenly appearing in just the last couple of days each time I open Mozilla: Youtube High Definition: TypeError: aId is undefined 1174.

How can I get rid of it? When I click on ok it goes away and Mozilla works fine, but the error message is annoying and I want to fix it.

I'm on a brand new Macbook Pro running El Capitán 10.11.

This error message is suddenly appearing in just the last couple of days each time I open Mozilla: ''Youtube High Definition: TypeError: aId is undefined 1174''. How can I get rid of it? When I click on ok it goes away and Mozilla works fine, but the error message is annoying and I want to fix it. I'm on a brand new Macbook Pro running El Capitán 10.11.

Wšykne wótegrona (1)

cor-el
cor-el
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Start Firefox in Safe Mode to check if one of the extensions (Firefox menu button/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • Hold down the Shift key and left-click the Reload button
  • Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • Press "Command + Shift + R" (Mac)

Clear the cache and remove cookies only from websites that cause problems.

"Clear the Cache":

  • Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"