Python 2.6 compatibility (error raising)

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs@21315 a0171fae-0946-0410-966d-b1775066cd26
released 1.1.8, new version 1.1.9

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs@21316 a0171fae-0946-0410-966d-b1775066cd26