AttributeError: 'NoneType' object has no attribute 'set_attributes' about androguard HOT 1 OPEN

Using:
Os: Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-36-generic x86_64)
product version: Androlyze version 2.0


Additional info:


AttributeError                            Traceback (most recent call last)
/home/ubuntu/androguard/androlyze.py in <module>()
----> 1 a, d, dx = AnalyzeAPK('/home/ubuntu/NortonSecurityandAntivirus.apk')

/home/ubuntu/androguard/androlyze.py in AnalyzeAPK(filename, raw, decompiler)
    116     androconf.debug("APK ...")
    117     a = APK(filename, raw)
--> 118     d, dx = AnalyzeDex(a.get_dex(), raw=True, decompiler=decompiler)
    119     return a, d, dx
    120

/home/ubuntu/androguard/androlyze.py in AnalyzeDex(filename, raw, decompiler)
    146
    147     androconf.debug("GVMAnalysis ...")
--> 148     gx = GVMAnalysis(dx, None)
    149
    150     d.set_vmanalysis(dx)

/home/ubuntu/androguard/androguard/core/analysis/ganalysis.pyc in 
__init__(self, vmx, apk)
   3248                                                  "DEXCLASSLOADER" )
   3249
-> 3250                         n1.set_attributes( { "dynamic_code" : "true" } )
   3251                         n2.set_attributes( { "color" : DEXCLASSLOADER_COLOR } )
   3252                         self.G.add_edge( n2.id, n1.id )

AttributeError: 'NoneType' object has no attribute 'set_attributes'