Although it appears you got everything working already, I want to add that some downloads (from various sites, including but not limited to Renderosity) are zipped into differring folder structures that may need to be rearranged before the products can be used. 

  Sometimes they unzip directly into a runtime folder, sometimes they create a subfolder within that folder and you have to move the contents up a level or two, and sometimes they won't even have a runtime folder structure (even though they may still require it) and you'll have to create those folders manually (or if you use a single runtime, move the files into the correct places within it.)  I have also seen a product with two zip files where one file unzipped one level deeper than the other file for the same product, so you had to unzip half the product, move it, then unzip the other half to get them together.

 

  It may seem confusing at first, but once you do it a bit, you'll get the hang of it.  When I think something should have installed but it didn't, I might compare it to a known working product's runtime and then my incorrect unzip location jumps out and I can correct it.