Crash when selecting various shape block elements

[Thalius1]

Crash is occurring when editing a shape file. In this instance, it occurs whenever I select "body" element of all deer entities in the vanilla game shape file. Crash also occurs when I select other various block elements, but not all. For example, I was editing the leg elements of the caribou, but when I selected the body block element to tweak it, the crash occurred. Program does not close, but I cannot select other blocks after the crash occurs. This happens every time. Tested on other deer shape files and the same thing occurred.