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when closing get error report that won't let me close firefox

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When click close X this error appears

Error occurred in extension:[Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [nsINavBookmarksService.insertBookmark]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: chrome://bcts/content/bcts.js :: anonymous :: line 135" data: no]

When click close X this error appears Error occurred in extension:[Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [nsINavBookmarksService.insertBookmark]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: chrome://bcts/content/bcts.js :: anonymous :: line 135" data: no]

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Such error message indicate a problem with an extension and 'bcts' can be used to identify the culprit.

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems