[Peter Johnson]

Generally the cause for sudden "No Robot Code" is a missing symbol. WindRiver is set up to link dynamic executables so it doesn't report missing symbol errors at build time. NetConsole will definitely help you determine whether this is the cause, as any missing symbols will be reported to the console when the cRIO attempts to run UserProgram.out. They will be name mangled (C++'s way of converting "foo::bar::baz(int a, int b, int c)" into a unique name of only upper/lowercase/numbers/underscores) but you should be able to decipher it pretty easily. I've sometimes found a full rebuild fixes it. A particularly common cause is missing symbols in the WPILib camera code.