Edited the DOM:
1. dataobject_manager\templates\ImageDataObjectManager.ss line 6
2. dataobject_manager\templates\RelationDataObjectManager.ss line 6
3. dataobject_manager\templates\DataObjectManager.ss line 6
Thank you Jamine. Feels a lot better making these fixes in template files so that I can just override from mysite templates. I noticed this kind of fix is required on "<% sprintf(_t('DataObjectManager.NOITEMSFOUND','No %s found'),$PluralTitle) %>" in the same files too.
I'm having this issue on a Debian server with PHP 5.2.12 so it's not limited to wamp server.