The images for that directory are hosted on the website of the Małopolska Genealogical Society, and it seems to be extremely slow in serving the images right now. You can wait and try again or contact them pointing out the problem.
The direct link to the file is: http://www.mtg-malopolska.org.pl/images/skany/ksiega_adresowa_1935_36/ksiega_adresowa_1935_36.djvu
. The title of the directory, as listed on their website, is: KSIĘGA ADRESOWA MAŁOPOLSKI, LWÓW, STANISŁAWÓW TARNOPOL Z INFORMATOREM M. STOŁ. WARSZAWY, WOJEWÓDZTWA KRAKOWSKIEGO, ŁÓDZKIEGO, POMORSKIEGO, POZNAŃSKIEGO I ŚLĄSKIEGO. ROCZNIK 1935/1936. Their contact address is at the bottom of http://www.mtg-malopolska.org.pl
Problems like this are often temporary, but it is also possible that there is something broken on their website that needs to be fixed (e.g., someone accidentally moved or deleted the file).