Behavior:
In rare cases, it may occur, that trying to open a document in the web client causes an object reference error message for only one file cabinet.
Solution:
In most cases it is enough to change to "Edit-Mode" of the result list once and then back to the original settings again. By doing these steps, the setting of the database will be rewritten.
If this is not solving the problem, then please contact the DocuWare Support with the error message, which is found in the temp directory of the DocuWare Web Client.