One of the older versions of windows I think.
Hey Perro,
When compiling 0.5 we needed to upgrade Renpy to 7.4.5 in order to get the Android builds to work- the problem is that Renpy dropped support for some old Windows versions in 7.4.
Someone in the forums had asked about this before (I'll be writing back to him right away), I downloaded the 7.3.5 sdk to compile a build that (might) be compatible with your windows version. I can't 100% guarantee that it will work bug free but if you absolutely can't get the regular version of 0.5 to work on your machine, this one might do the trick.
*edited because it was password protected, FUCK