I downloaded and unzipped vina-carb but I get an error when I try to run it. There's no readme (excluding the license file) so I'm not sure how I would compile it if that's what I need to do. The output is:

 
#################################################################
#             Vina-Carb Results                  #
#################################################################

WARNING: The search space volume > 27000 Angstrom^3 (See FAQ)
Output will be hs13_ligand_out.pdbqt
Detected 20 CPUs
WARNING: at low exhaustiveness, it may be impossible to utilize all CPUs
Reading input ... yes
yes
yes
yes
yes
yes
Error opening file.
Expected location is:

    (null)/autodock_vina_1_1_2/src/lib/canonicals.txt

Attempted file open for r
Exiting.
 
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Everything works fine with vina (so I'm not thinking it's the input file).

Suggestions would be appreciated.