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Firefox 23 incompatibility Rated 5 out of 5 stars
When trying to save audio:
Error: [Exception... "'TypeError: aCallback is not a function' when calling method: [nsIRunnable::run]" nsresult: "0x8057001c (NS_ERROR_XPC_JS_THREW_JS_OBJECT)" location: "native frame :: <unknown filename> :: <TOP_LEVEL> :: line 0" data: no]