I have WSUS Offline Update 7.3.1 and show the next error:
Verifying integrity of existing updates for wxp esn...
..\wxp\esn\WindowsXP-KB835935-SP2-ESN.exe: No match
hashdeep.exe: Audit failed
Input files examined: 0
Known files expecting: 0
Files matched: 145
Files partially matched: 0
Files moved: 0
New files found: 1
Known files not found: 0
ERROR: File integrity verification failure.