I am trying to synchronise my repos using tortoise hg on mercurial but i keep on getting the following error.

ealm: Bitbucket.org HTTP
user: bobchege
searching for changes
abort: Permission denied: /home/chege/workspace/Eclipse/gradebookv1/.hg/store/data/scripts/gradebookv1_loaddata/parents_portal.sql.i
[command returned code 255 Mon Apr 2 23:33:20 2012]
gradebookv1%

This is inspite the fact that I am sure that my login credentials are correct. What could be the problem?