During plan creation a

com.atlassian.bamboo.exception.DataAccessException: org.apache.commons.configuration.ConfigurationException: org.w3c.dom.DOMException: INVALID_CHARACTER_ERR:

is thrown when the plan permission configuration contain a user name or group name with a space.
User and group names with withspace are ok in LDAP for example.

To reproduce:

1. create a group name with a space like "bamboo administrator" in ldap
2. connect bamboo to ldap
3. create a plan, add above group in the permissions screen
4. BANG