Coding error detected, it must be fixed by a programmer: Invalid state passed to moodle_page::set_state. We are in state 0 and state 2 was requested.

[mhughes2k]

We have set up this plugin and when we attempt to access an LTI user's profile via the user drop down menu we get

Coding error detected, it must be fixed by a programmer: Invalid state passed to moodle_page::set_state. We are in state 0 and state 2 was requested.

Stack trace: 
    line 883 of /lib/pagelib.php: coding_exception thrown
    line 78 of /local/ltiprovider/lib.php: call to moodle_page->set_state()
    line 1304 of /lib/navigationlib.php: call to local_ltiprovider_extend_navigation()
    line 3424 of /lib/navigationlib.php: call to global_navigation->initialise()
    line 718 of /lib/pagelib.php: call to settings_navigation->__construct()
    line 768 of /lib/pagelib.php: call to moodle_page->magic_get_settingsnav()
    line 128 of /user/profile.php: call to moodle_page->__get()

(if I disable the debug output it just returns the red coding error box.

Looking at the code in question it appears to be something to do with forcenavigation setting and having an $urltogo