My answer is accurate. Remote Buddy is not responsible for your issue.

As a matter of fact

1) only running applications can hold a lock. If you uninstalled Remote Buddy, it is no longer running and can no longer run.

2) Remote Buddy doesn't contain any code that would do any such locking - it uses a different mechanism. Remote Buddy definitely is not the cause of your issue.

3) Therefore, if RCD detects an application having a lock on the receiver, it definitely has to be another application that you installed. Most commonly this is either the helper tools of Plex, XBMC or Boxee (sometimes even the remains of an old installation). Under OS X 10.6, RCD would also have been able to name you the name of the tool and its full path. Prior to OS X 10.6, this information is not made available by OS X.

I can still help you, though. Please

1) Open Terminal.app 
2) enter 
sudo ps aux -w -A 
3) enter your password when prompted 
4) cut and paste the full output of the tool into a reply

I can then go through the list of applications running on your computer and show you which one is causing you the issue, which, as explained before, really can't be Remote Buddy.

Best regards, 
Felix Schwarz