Ok, i managed to compile that basic program with tango installed.
But still can't compile any_i_tried projects from dsource,
eg. i can't compile bud
i was getting same errors as first poster at http://www.dsource.org/forums/viewtopic.php?t=3060
, later same errors as pre-last one, last comment being "looks like the tango installer or something else modified your phobos library".