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Hello,this error comes up all the time:Could not read chrome manifest file 'C:\Program Files\Mozilla Firefox\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\chrome.manifest'. What does it mean? and how can I fix it?

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Could not read chrome manifest file 'C:\Program Files\Mozilla Firefox\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\chrome.manifest'.

This is pretty much it, It was in my error console and its there every time I check on my errors

Could not read chrome manifest file 'C:\Program Files\Mozilla Firefox\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\chrome.manifest'. This is pretty much it, It was in my error console and its there every time I check on my errors

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A complete uninstall and reinstall of Firefox will fix this. See Uninstall Firefox from your computer and be sure to remove the folder from your Program Files before reinstalling.

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I used the 64bit win7,when I start firefox it will be no response just in one minute ,the console show me this error :Could not read chrome manifest file 'C:\Program Files\Mozilla Firefox\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\chrome.manifest!