Thanks for asking.

This sounds like a file permissions problem. Usually "compile, test 
and permanently install" will save a copy of the Scripted Behaviour to

~/Application Support/Remote Buddy/Behaviours/

so that RB will find and load it on the next start. If file 
permissions keep RB from saving the new Behaviour there, this of 
course won't work.

Possible workaround: 
1) Export the Behaviour to f.ex. your desktop. 
2) Manually move the new Behaviour to above location. If access to 
that dir is restricted as I think (and which it usually shouldn't be), 
the Finder should prompt you for your admin password.

Best regards, 
Felix Schwarz