Hi Gordon - FYI upgrading your hotpot module in Moodle 2.3 fails when upgrading if the admin user isn't logged in. - it works ok when logged in as admin. (found this while running CLI upgrade but can be reproduced using standard web upgrade when not logged in)

it gives this error:
-->mod_hotpot
Default exception handler: Coding error detected, it must be fixed by a programmer: PHP catchable fatal error Debug: Argument 2 passed to has_capability() must be an instance of context, boolean given, called in /var/www/theloop-testing-moodle/releases/20120815020126/mod/hotpot/lib.php on line 1628 and defined
Error code: codingerror

• line 397 of /lib/setuplib.php: coding_exception thrown
• line 355 of /lib/accesslib.php: call to default_error_handler()
• line 1628 of /mod/hotpot/lib.php: call to has_capability()
• line 1584 of /mod/hotpot/lib.php: call to hotpot_update_events()
• line 626 of /mod/hotpot/db/upgrade.php: call to hotpot_refresh_events()
• line 627 of /lib/upgradelib.php: call to xmldb_hotpot_upgrade()
• line 358 of /lib/upgradelib.php: call to upgrade_plugins_modules()
• line 1524 of /lib/upgradelib.php: call to upgrade_plugins()
• line 159 of /admin/cli/upgrade.php: call to upgrade_noncore()
  !!! Coding error detected, it must be fixed by a programmer: PHP catchable fatal error !!!
  !! Argument 2 passed to has_capability() must be an instance of context, boolean given, called in /var/www/theloop-testing-moodle/releases/20120815020126/mod/hotpot/lib.php on line 1628 and defined
  Error code: codingerror !!
  !! Stack trace: * line 397 of /lib/setuplib.php: coding_exception thrown
• line 355 of /lib/accesslib.php: call to default_error_handler()
• line 1628 of /mod/hotpot/lib.php: call to has_capability()
• line 1584 of /mod/hotpot/lib.php: call to hotpot_update_events()
• line 626 of /mod/hotpot/db/upgrade.php: call to hotpot_refresh_events()
• line 627 of /lib/upgradelib.php: call to xmldb_hotpot_upgrade()
• line 358 of /lib/upgradelib.php: call to upgrade_plugins_modules()
• line 1524 of /lib/upgradelib.php: call to upgrade_plugins()
• line 159 of /admin/cli/upgrade.php: call to upgrade_noncore()
  !!

once getting this error you can just login as admin and it allows the upgrade to continue.

thanks,

Dan