I just installed BRU 2.7.1.1 BRU_Setup_WinNTx64.exe 
The "Bulk rename here" context-menu entry is missing.  I even tried reinstalling using "Run as Administrator" on the installer, thinking maybe it had insufficient rights to add an entry to my right-click menu, but this didn't work either.
I've used and enjoyed BRU 2.7.0.1 in the past on 32-bit vista with no problem with the context-menu entry.
Any suggestions?  Is this a bug?  A Vista 64-bit issue?