When the design manager creates an XPROJ directory it sets the permissions on this folder to be read/write and execute for the user ONLY. If umask is set so that other users in the group have access to the folders. The tools ignore this setting.
You can use chmod to change the permissions on the xproj directory.
Example: chmod -R 777 xproj/
This gives user, group and others all read write and execute permissions.