always an alert on opening firefox, please help me to avoid this. And i can find help in french. thanks

this message appears at the opening: Adobe® Flash® Player has stopped a potentially unsafe operation. The following local application on your computer or network: /jar/file/:::Users:soniasnoussi:Library:Application Support:Firefox:Profiles:ydjvyvnz.default:extensions:{ef4e370e-d9f0-4e00-b93e-a4f274cfdd5a}.xpi!:chrome:content:foxTab_flash10.swf?v1_4_1 is trying to communicate with this Internet-enabled location: null To let this application communicate with the Internet, click Settings. You must restart this application after changing your settings. Thank you for your help. In french if possible Sonia