Please do not make the default directory the only option! I for one, support many, many projects for dozens of clients. To do so, I use a well definded directory stucture for tools, clients, projects, etc. Being able to place the compiler properly within that stucture is very important to me. I can live with no spaces in the directory path but having a fixed install point makes my life more difficult.
Maybe issuing a warning or not accepting a requested install point if the path contains spaces would be adequate?? just my 2 cents. -Bill Knight R O SoftWare