SVN commit problem

I developed a plugin and submitted it to wordpress to host it in the plugin directory. A few hours later, I got a mail from the wp team and I was happy. I followed the guidelines to store my plugin files in the repository but ended up getting an error when I reached this step:
svn ci -m ‘Adding first version of my plugin’
This is the error msg I got:
svn: Commit failed (details follow):
svn: MKACTIVITY of ‘/!svn/act/7d580bfa-d80f-4d5e-a6e0-00cf6dac2b99’: authorization failed: Could not authenticate to server: rejected Basic challenge (https://plugins.svn.www.remarpro.com)
I tried googling for a solution but none of them worked for me. Any help?
P.S: I am a mac os x user.