I'm not sure this will help, but here is the thread where you can download Thierry's stuff. The download you're looking for is the first download and you can see in the image that "basic shapes" pack.
https://feral-heart.com/smf/index.php?topic=60503.0The other potential problem is just that the map is too large. At 200,000 it is a very large map and sometimes that large of a map can just be too much especially depending on the computer you're running it on. I have trouble with certain object heavy maps and large maps. I would try, just as a trial, to make the map smaller such as 5000 width and putting in a couple of the objects you used to see if the problem continues.
Like spicydirt said it could just be one object affecting the map.