sqlmap version: 1.0-dev-nongit-20151001
Python version: 2.7.9
Operating system: posix
Command line: /usr/bin/sqlmap -u *************************************************************** --sql-shell -v 3 --parse-error
Technique: BOOLEAN
Back-end DBMS: SQLite (fingerprinted)

Traceback (most recent call last):
  File "sqlmap", line 100, in main
    start()
  File "share/sqlmap/lib/controller/controller.py", line 625, in start
    action()
  File "share/sqlmap/lib/controller/action.py", line 139, in action
    conf.dbmsHandler.sqlShell()
  File "share/sqlmap/plugins/generic/custom.py", line 102, in sqlShell
    output = self.sqlQuery(query)
  File "share/sqlmap/plugins/generic/custom.py", line 48, in sqlQuery
    output = inject.getValue(query, fromUser=True)
  File "share/sqlmap/lib/request/inject.py", line 423, in getValue
    value = _goInferenceProxy(query, fromUser, batch, unpack, charsetType, firstChar, lastChar, dump)
  File "share/sqlmap/lib/request/inject.py", line 156, in _goInferenceProxy
    _, _, _, _, _, expressionFieldsList, expressionFields, _ = agent.getFields(expression)
  File "share/sqlmap/lib/core/agent.py", line 504, in getFields
    fieldsToCastStr = fieldsSelect.groups()[0]
AttributeError: 'NoneType' object has no attribute 'groups'