Concerning the Imax Theater, it is correct that the same graphic was used for all 4 icon views. Actually, APE makes it easy to create icons out of the building graphics. But sometimes creators do not know that and sometimes they just like a consistent view.
Concerning the Zoo Admin building, which I assume is the ZA Administration Building, maybe it is a corrupted memory problem or maybe it is a graphics driver problem. You might want to try the building again to see if the same problem occurs. Also, you might want to check the web site of the company that made your graphics adapter to see if they have a newer version of the graphics driver. Or it could be related to the next problem.
Concerning the Endangered Species Art Building, that is baffling. It works in my game as well and I have a very unusual setup where crashes usually show up for me before they do for anyone else. I also looked at its configuration and, although there are some inconsistencies, nothing that should cause a crash. The timing of the crash is also unusual. Crashes that occur when something is purchased are usually very obvious and very consistent. Like the previous building, you might want to try the building again to see if it continues to crash at the same place. A newer graphics driver might also correct the problem. If you have run patch programs that come with some older buildings or if you have any user created ".dll" files in the Zoo Tycoon folder that are larger than 1.8 mb, then these can cause sporadic crashes, but not usually when purchasing something. If your computer has little physical memory and little virtual memory, and if you have a lot of user downloads installed, that can also cause crashes.