mono for android arsgen file not found

Question

Hi this is my first program in mono-for-android application in visual studio 2010. when i try to build the program it shows error

Error1System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specifiedc:\users\guest\documents\visual studio 2010\Projects\MonoAndroidApplication2\MonoAndroidApplication2\aresgenMonoAndroidApplication2