Fout: uncaught exception: [Exception... "Component returned failure code: 0x80550013 [nsIMsgFolder.deleteSubFolders]" nsresult: "0x80550013 (<unknown>)" location: "JS frame :: chrome://messenger/content/folderPane.js :: ftc_delete :: line 2201" data: no]
Fout: uncaught exception: [Exception... "Component returned failure code: 0x80550013 [nsIMsgFolder. deleteSubFolder s]" nsresult: "0x80550013 (<unknown>)" location: "JS frame :: chrome: //messenger/ content/ folderPane. js :: ftc_delete :: line 2201" data: no]