I turned on PHP debugging in joomla and ran through the form to see what would happen. I got no errors on the Blank Page of course. But when the form was loaded up before I filled it in. It did show the following errors:
The database row is empty.
Call stack
# Function Location
1 JSite->dispatch() JROOT/index.php:42
2 JComponentHelper::renderComponent() JROOT/includes/application.php:197
3 JComponentHelper::executeComponent() JROOT/libraries/joomla/application/component/helper.php:351
4 require_once() JROOT/libraries/joomla/application/component/helper.php:383
5 JController->execute() JROOT/components/com_fabrik/fabrik.php:185
6 FabrikControllerForm->display() JROOT/libraries/joomla/application/component/controller.php:760
7 JCacheControllerView->get() JROOT/components/com_fabrik/controllers/form.php:135
8 fabrikViewForm->display() JROOT/libraries/joomla/cache/controller/view.php:98
9 FabrikViewFormBase->display() JROOT/components/com_fabrik/views/form/view.html.php:36
10 FabrikFEModelForm->render() JROOT/components/com_fabrik/views/form/view.base.php:58
11 FabrikFEModelForm->getRowId() JROOT/components/com_fabrik/models/form.php:2814
12 FabrikFEModelForm->getListModel() JROOT/components/com_fabrik/models/form.php:2774
13 FabrikFEModelList->loadFromFormId() JROOT/components/com_fabrik/models/form.php:1986
14 FabrikTableList->load() JROOT/components/com_fabrik/models/list.php:3075
I'm afraid I don't have enough experience to be able to make anything useful out of that information.
I also checked on the memory limit. We are using a hosting company. But the php memory limit is currently set to 128MB.