IPHONE 3GS安裝mobilelog 3.0失敗的原因

用CYDIA搜尋到MOBILELOG，安裝過程出現以下二條訊息
重複安裝幾次都沒辦法成功，請問是哪裡出問題了呢？
trying to overwrite /Applications/MobileLog.app/mainwindow.nib,white is also in package com.yvansoftware.mobilelog

Sub-process/user/bin/dpkg returned an error code (1)