The NEWMODULE stub module has some issues working with Moodle 2.

1. You cannot add a module instance to a course (DB errors).
2. You cannot view the module (url error).

To resolve 1:

There is no function newmodule_supports in lib.php. This needs to be added and support for FEATURE_MOD_INTRO enabled. example:

function newmodule_supports($features) {
switch($feature)

}

In the DB record for the module instance timemodified is expected to not be null. When adding an instance this is not set. Function newmodule_add_instance in lib.php needs amending to also set this value, e.g.:
$newmodule->timemodified = $newmodule->timecreated;

To resolve 2:
In view.php line 56 should have a forward slash before the path e.g.:
$PAGE->set_url('/mod/newmodule...