When trying to update to 4.4 from 4.3.8 I get a freemarker-error. The log tells me to go to ".magnolia" to update as usual. But that page gives me this.

FreeMarker template error!

Method public java.lang.String info.magnolia.module.ModuleManager$ModuleManagementState.getDeltaTypesDescription(java.lang.String[]) threw an exception when invoked on info.magnolia.module.ModuleManager$ModuleManagementState@7c3422b5
The problematic instruction:
----------
==> ${status.getDeltaTypesDescription(['installation', 'update', 'installation and update'])} [on line 19, column 26 in info/magnolia/module/ui/ModuleManagerWebUI.header.html]
in include "ModuleManagerWebUI.header.html" [on line 1, column 1 in info/magnolia/module/ui/ModuleManagerWebUI.listTasks.html]
(see attachment for more)