HSFETCH always returning 512 Bad argument

Doing a "HSFETCH" on a v2 or v3 service always seems to return "512 Bad arguments to HSFETCH: Empty body"

i.e

telnet localhost 9055
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
AUTHENTICATE
250 OK
HSFETCH facebookcorewwwi      
512 Bad arguments to HSFETCH: Empty body

Works fine for version 0.4.0.5

Trac:
Username: csucu