I tested the new server revision:
https://code.launchpad.net/~openerp-groupes/openobject-server/6.0-cli-allows-multiple-addons-path

with aeroo reports and multiple addons paths

but the same error occurs when i try to print the sample report:

"hello_world" not defined For more reference inspect error logs. (<type 'exceptions.Exception'>, Exception(u'Aeroo Reports: Error while generating the report.', UndefinedError('"hello_world" not defined',), '"hello_world" not defined', u'For more reference inspect error logs.'), <traceback object at 0xa416f2c>)

and the traceback is:

ERROR:report_aeroo:[01]: Traceback (most recent call last):
ERROR:report_aeroo:[02]:   File "/home/david/Escritorio/prueba/addons2/report_aeroo/report_aeroo.py", line 396, in create_aeroo_report
ERROR:report_aeroo:[03]:     data = basic.generate(**oo_parser.localcontext).render().getvalue()
ERROR:report_aeroo:[04]:   File "/usr/local/lib/python2.6/dist-packages/aeroolib-1.0.0-py2.6.egg/aeroolib/plugins/base.py", line 48, in render
ERROR:report_aeroo:[05]:     return self.serializer(self.events)
ERROR:report_aeroo:[06]:   File "/usr/local/lib/python2.6/dist-packages/aeroolib-1.0.0-py2.6.egg/aeroolib/plugins/opendocument.py", line 1156, in __call__
ERROR:report_aeroo:[07]:     for kind, data, pos in stream:
ERROR:report_aeroo:[08]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 605, in _include
ERROR:report_aeroo:[09]:     for event in stream:
ERROR:report_aeroo:[10]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/markup.py", line 327, in _match
ERROR:report_aeroo:[11]:     for event in stream:
ERROR:report_aeroo:[12]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 565, in _flatten
ERROR:report_aeroo:[13]:     result = _eval_expr(data, ctxt, vars)
ERROR:report_aeroo:[14]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 277, in _eval_expr
ERROR:report_aeroo:[15]:     retval = expr.evaluate(ctxt)
ERROR:report_aeroo:[16]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/eval.py", line 178, in evaluate
ERROR:report_aeroo:[17]:     return eval(self.code, _globals, {'__data__': data})
ERROR:report_aeroo:[18]:   File "<string>", line 1, in <Expression u'__filter(hello_world(o.name))'>
ERROR:report_aeroo:[19]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/eval.py", line 309, in lookup_name
ERROR:report_aeroo:[20]:     val = cls.undefined(name)
ERROR:report_aeroo:[21]:   File "/usr/local/lib/python2.6/dist-packages/Genshi-0.6-py2.6.egg/genshi/template/eval.py", line 410, in undefined
ERROR:report_aeroo:[22]:     raise UndefinedError(key, owner=owner)
ERROR:report_aeroo:[23]: UndefinedError: "hello_world" not defined
ERROR:web-services:[01]: Exception: (u'Aeroo Reports: Error while generating the report.', UndefinedError('"hello_world" not defined',), '"hello_world" not defined', u'For more reference inspect error logs.')
ERROR:web-services:[02]: Traceback (most recent call last):
ERROR:web-services:[03]:   File "/home/david/Escritorio/prueba/openerp-server/bin/service/web_services.py", line 724, in go
ERROR:web-services:[04]:     (result, format) = obj.create(cr, uid, ids, datas, context)
ERROR:web-services:[05]:   File "/home/david/Escritorio/prueba/addons2/report_aeroo/report_aeroo.py", line 537, in create
ERROR:web-services:[06]:     return fnct(cr, uid, ids, data, report_xml, context)
ERROR:web-services:[07]:   File "/home/david/Escritorio/prueba/addons2/report_aeroo/report_aeroo.py", line 494, in create_source_odt
ERROR:web-services:[08]:     return results and len(results)==1 and results[0] or self.create_single_pdf(cr, uid, ids, data, report_xml, context)
ERROR:web-services:[09]:   File "/home/david/Escritorio/prueba/addons2/report_aeroo/report_aeroo.py", line 438, in create_single_pdf
ERROR:web-services:[10]:     return self.create_aeroo_report(cr, uid, ids, data, report_xml, context=context, output=output)
ERROR:web-services:[11]:   File "/home/david/Escritorio/prueba/addons2/report_aeroo/report_aeroo.py", line 402, in create_aeroo_report
ERROR:web-services:[12]:     raise Exception(_("Aeroo Reports: Error while generating the report."), e, str(e), _("For more reference inspect error logs."))
ERROR:web-services:[13]: Exception: (u'Aeroo Reports: Error while generating the report.', UndefinedError('"hello_world" not defined',), '"hello_world" not defined', u'For more reference inspect error logs.')