It is not clear what has gone wrong for you from your description!
I would suggest that you follow the instructions at
http://calibre2opds.com/read-the-doc...d-and-install/ for starting with the ZIP file version (Platform Independent Install) and doing a manual install. That version was produced specifically for those who trouble running the automated installer for any reason so if you follow the instructions it should work with no problems.
BTW: what version are you trying to install (you posted this in the V2 thread). The current version is v3.0 (rev 151).