When the status of a case is changed, the case edit screen hangs

This is caused by the sharepoint extension. Under the hood the following error is generated.

One of parameters  (value: ) is not of the type Integer
...
   /var/www/interlokaal/web/civi_test/sites/all/modules/civicrm/CRM/Core/DAO.php:1666 { …}
   /var/www/interlokaal/web/civi_test/sites/all/modules/civicrm/CRM/Core/DAO.php:1630 { …}
   /var/www/interlokaal/web/civi_test/sites/all/modules/hilextensions/sharepoint/sharepoint.php:204 { …}
   /var/www/interlokaal/web/civi_test/sites/all/modules/hilextensions/sharepoint/sharepoint.php:33 { …}