\adt-bundle-windows-x86_64-20130219\sdk\platform-tools\aapt.exe is invalid

When your are using Android with Csharp or when you are using Monoandroid you will be facing some some error related to aapt.exe missing or aapt.exe invalid . These are common error to Monoandroid developer that almost every one that uses Monoandroid will face . So Today I decided to get the actual reason of this problem and I sit on my chair to find out the reason and possible...