I have tried a fresh installation of HB and running as admin. It just says "Honorbuddy has stopped working. Please wait while Windows searches for a solution." I don't get the chance to even log in so I cannot provide a log.
1. Make sure WoW is run in DirectX 9. (Menu > Options > Graphics > Advanced)
2. Make sure you have NET Framework 4.5 installed.
3. Run HonorBuddy with Administrator Privileges.