Programmer - SVN - Checked out copy cannot be committed: 'not a working copy'

Hello,

I've just set up Visual SVN Server and slik SVN clients.

I imported a project from my desktop computer into the repository. Then, on my laptop I checked out a copy and made some changes. When I tried to commit, it failed saying it was not a working copy.

I thought maybe I had somehow messed up the svn files, not sure how I would have though. Anyway, I checked out another copy and then immediately tried to commit it, but again, it said not a working copy.

I must be missing something here.

edit

I used svn import to import the project
and svn checkout to checkout the project