You're having serious problems attaching to the WoWclient. Make sure of the following:
You are running the WoWclient in 'windowed' mode--not fullscreen
You are running Honorbuddy with admin privileges (right-click --> "Run as Administrator")
If neither one of those work, you'll need to try these next:
Reboot your machine then try again
Reinstall Honorbuddy 5024
Check your .NET 3.5 SP1 ([wiki]Buddy products: Installing the .NET 3.5 Framework[/wiki])
To be honest, my intuition says you're not running Honorbuddy with Admin privileges. But whatever it is, Honorbuddy will be flakey until it can attach to the WoWclient smoothly.