EXECUTE: Create Seam project.
EXECUTE: Open Hibernate Configuration view and try to expand the configuration node.
RESULT: Error dialog 'Hibernate Configuration' appears with details:

org.hibernate.console.HibernateConsoleRuntimeException: Could not load JPA Configuration
Could not load JPA Configuration
org.hibernate.console.HibernateConsoleRuntimeException: Could not create JPA based Configuration
Could not create JPA based Configuration
org.hibernate.console.HibernateConsoleRuntimeException: Could not create JPA based Configuration
Could not create JPA based Configuration
java.lang.reflect.InvocationTargetException: <no message>
java.lang.reflect.InvocationTargetException
javax.persistence.PersistenceException: java.lang.IllegalArgumentException: Unable to visit JAR file:/C:/Documents and Settings/glory/workspace-rhds-cr1/p1/build/classes.

Obviously, white space symbols are not escaped in urls.