There's a typo with the error message. "Intialisation" should be "Initialization" Here's where it's at.
[stran@stran teiid-designer]$ grep intialisation . -R
./plugins/org.teiid.designer.dqp/src/org/teiid/designer/runtime/i18n.propertiesTeiidParentServerListener.initTeiidServerException.reason = The intialisation produced an exception, which can occur due to incorrect security credentials. Please review the exception messages by clicking the Details button.