Sorry, it looks like the link has changed to:
http://prestel.txt.de/cgi-bin/WebObjects/TXTSVPrestel2.woa/41/wo/si7PxxH0FXr62hNqTbV18omm3NQ/1.0.25.1.5.1.5.9.0.1.0.BoxArtikelSmall.1.25.0
A new publication dedicated to the Aga Khan Museum by Philip Jodidio was just released a couple of days:
http://prestel.txt.de/cgi-bin/WebObjects/TXTSVPrestel2.woa/40/wo/mn1UWQLQ0eAR3lAMc4H2vUTprtk/2.0.25.1.5.1.5.9.0.1.0.BoxArtikelSmall.1.25.0