Hi, It seems the ghc 6.4 release candidates' configure scripts fail if you run them in a directory structure containing a space. In my case, being in /home/chucky/My Downloads fails with: configure: creating ./config.status config.status: creating ghc.spec config.status: creating VERSION config.status: creating docs/users_guide/ug-book.xml config.status: creating mk/config.mk config.status: creating mk/version.mk ./configure: line 20341: cd: /home/chucky/My: No such file or directory This is on amd64 linux. Cheers, Anders