It's odd, it doesn't give me any error or anything, it just simply closes without notice when I load the library and another map at the same time.
Redownloading probably won't help anything, the installer has a self-hash-check and wouldn't run if it got corrupted. Though you can try it anyway if you want.
However, I don't really know what might be causing the problem. There is nothing special about it, just a bunch of prop entities.
That wouldn't happen. I've had my gcf files corrupt before, you just get "ERROR" models like you would if you typed the name in wrong.