Try to learn How to debug errors, you can read the stacktrace and also run the application through debugger. Read from top to bottom, you will find what actually happened.
01-06 16:50:37.863: E/AndroidRuntime(490): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.knight.baseproject/com.knight.baseproject.com.knight.baseproject.MENU}: java.lang.ClassNotFoundException: com.knight.baseproject.com.knight.baseproject.MENU in loader dalvik.system.PathClassLoader[/data/app/com.knight.baseproject-2.apk]
01-06 16:50:37.863: E/AndroidRuntime(490): Caused by: java.lang.ClassNotFoundException: com.knight.baseproject.com.knight.baseproject.MENU in loader dalvik.system.PathClassLoader[/data/app/com.knight.baseproject-2.apk]
if you read it properly, you would find that an exception occured "ClassNotFoundException" because it couldn't find the class.
I think it's because you didn't add your Activity in your AndroidManifest.xml, whatever activity you use in application should be defined in the manifest file.
It would be great if you could post your code & manifest.