problem when compiling the application

Mar 9, 2011 at 6:22 PM

I have a problem when compiling the application gives error:
"Object reference not set to an instance of an object"
in
"get {return (bool) this [" isBeta "];}"
file
"facebooksdk_eb29210cf1a8 \ Source \ Facebook \ FacebookConfigurationSection.cs Line: 91"
anyone experienced this