Is this a Bug in CRM Module??

OpenERP Server Error

Client Traceback (most recent call last): File "/usr/lib/pymodules/python2.7/openerp/addons/web/http.py", line 204, in dispatch response["result"] = method(self, **self.params) File "/usr/lib/pymodules/python2.7/openerp/addons/web/controllers/main.py", line 1054, in search_read return self.do_search_read(req, model, fields, offset, limit, domain, sort) File "/usr/lib/pymodules/python2.7/openerp/addons/web/controllers/main.py", line 1077, in do_search_read req.context) File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 42, in proxy result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw) File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 30, in proxy_method result = self.session.send(self.service_name, method, *args) File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 103, in send raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info)

Server Traceback (most recent call last): File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 89, in send return openerp.netsvc.dispatch_rpc(service_name, method, args) File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 292, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 626, in dispatch res = fn(db, uid, params) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 188, in execute_kw return self.execute(db, uid, obj, method, *args, *kw or {}) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 131, in wrapper return f(self, dbname, args, *kwargs) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 197, in execute res = self.execute_cr(cr, uid, obj, method, args, *kw) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 185, in execute_cr return getattr(object, method)(cr, uid, args, *kw) File "/usr/lib/pymodules/python2.7/openerp/addons/base_calendar/base_calendar.py", line 1367, in search res = super(calendar_event, self).search(cr, uid, new_args, offset=0, limit=0, order=order, context=context, count=False) File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 2354, in search return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count) File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 4845, in _search query = self._where_calc(cr, user, args, context=context) File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 4674, in _where_calc e = expression.expression(cr, user, domain, self, context) File "/usr/lib/pymodules/python2.7/openerp/osv/expression.py", line 640, in __init__ self.parse(cr, uid, context=context) File "/usr/lib/pymodules/python2.7/openerp/osv/expression.py", line 757, in parse field_path = left.split('.', 1) AttributeError: 'NoneType' object has no attribute 'split'