3 of the 5 level 5 buildings I just got offerred didn't have graphics. Picked the Onyx building,one of the ones that didn't have a picture and now it won't let me actually build it.
save game (after got to level 5) http://dl.dropbox.com/u/8928343/QuickSave.EleSav
debug.err http://dl.dropbox.com/u/8928343/debug-level-5.err
This happened before, the only other time I got a city to level 5. I exited & loaded and on my next try more of the buildings were valid (but still not all 5). May try this one again....
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edit -- sorry, should have posted in support.
Anyway, after re-loading, it offered a slightly different set of buildings and I picked on of the 2 with a valid image (Hosten's Library) in the level-up screen. It lets me build it but in the city-build screen and on the strategy map it shows as a solid black square.