Msfpescan Error with memdumps

[DAVID.G.WESTON at saic.com (David Weston)]

Any Idea what would cause this?  I dumped memory for a running process and
cannot get msfpescan to work.  I get the same error if I used the directory
or specify the path to the index.

ruby msfpescan -p -M ./2212/index.rng
[./2212/index.rng]
./lib/rex/pescan/scanner.rb:20:in `scan': undefined method `all_sections'
for #<Rex::PeParsey::PeMemDump:0x3774cc> (NoMethodError)
        from msfpescan:136
        from msfpescan:117:in `each'
        from msfpescan:117

Thanks,
Dave