Traceback (most recent call last): File "/usr/local/bin/waf", line 330, in <module> try: Scripting.Main() File "/usr/local/lib/waf-1.1.1-1559484527/wafadmin/Scripting.py", line 166, in Main bld.load_dirs(proj['srcdir'], proj['blddir']) File "/usr/local/lib/waf-1.1.1-1559484527/wafadmin/Build.py", line 312, in load_dirs self._load() File "/usr/local/lib/waf-1.1.1-1559484527/wafadmin/Build.py", line 120, in _load dto = cPickle.load(file) File "/usr/local/lib/waf-1.1.1-1559484527/wafadmin/Node.py", line 78, in __hash__ if not self.__hash_value: AttributeError: Node instance has no attribute '_Node__hash_value'