我've integrated Sparkle framework into my Cocoa app (MacOS X 10.9.5). While testing updates, Sparkle reports that there is an update available (i'm使用此appcast），下载并重新启动应用程序 . 但是在启动时我仍然有旧版本的应用程序 . 可能是什么问题呢？
以下是更新期间控制台的日志：
2014-10-09 16:45:20.946 NdnCon[14647:507] Sparkle: ===== NdnCon.app =====
2014-10-09 16:45:21.491 NdnCon[14647:507] Invalid color System, labelColor (warning given only once)
2014-10-09 16:45:26.824 NdnCon[14647:14203] Sparkle: Extracting /Users/peetonn/Library/Application Support/NdnCon/.Sparkle/NdnCon 2/v0.1.1.zip using 'ditto -x -k - "$DESTINATION"'
2014-10-09 16:45:32.548 NdnCon[14647:507] Sparkle: The host app is not signed using Apple Code Signing, and therefore cannot verify updates this way. Sparkle will use DSA signature instead.
2014-10-09 16:45:32.618 NdnCon[14647:507] terminating...