new multi sites have wrong urls

hey folks, Creating a new multi site generates the wrong urls or site paths.

instead of:
http://www.sitename.com/newblog

i get:
http://www.sitename.comsitenamenewblog

There are no slashes!

This happens for all the paths specified in the database (uploads, home, etc.) Can I correct my primary site settings in mysql? Or is the culprit somewhere else? What do your paths looks like for the primary site?

Are multi-site blogs supposed to be grouped site under /sitename/ ??

Any advice greatly appreciated.

p.s. I corrected the paths in the database to confirm that everything else is working as it should.

thanks!!