The Database Definitions window will not let me select a different DDF or create a new one.
If you are not encountering an error (see below), then whether you can select or create a DDF depends on Always use Document DDF DesignMerge preference, which is currently available only in DesignMerge for InDesign. By default, this preference is turned off (unchecked). However, if you change the default setting and turn on (check) this preference, then you will not be able to select a DDF or create a new one.
This feature has been designed to allow you to choose between using the version of the DDF that is stored in the InDesign document or the version of the DDF that is stored on your system.
When this preference is turned on (checked), DesignMerge will use the version of a document’s DDF that has been stored inside your document file. In other words, every time the document is opened, or you switch the focus of your application to this document, DesignMerge will automatically replace the DDF that is stored on your system with the version of the DDF that is stored within the document. Additionally, you will not be able to use the Database Definitions window to select a different DDF or to create a new DDF. IMPORTANT NOTE: You can still edit the document's DDF. Enabling this preference does not prevent you from editing the document's DDF. Any changes that you make will be made to the copy of the DDF that is stored inside the document file and also to the copy of the DDF that is stored on your system.
When this preference is turned off (unchecked, the default setting), DesignMerge will always use the versions of the DDFs that are stored on your system. If you edit a document's DDF, the changes will be applied to both the copy of the DDF that is stored on your system and also to the DDF that is stored inside the document file.
IF YOU SEE AN ERROR MESSAGE when you try to select a DDF, edit a DDF, rename a DDF, or create a new DDF, then one of your DDFs may have become corrupt, or your installation of DesignMerge is unable to access or write internal configuration information on your system. For assistance in repairing your installation, open a Support Ticket on the Meadows Help Desk (http://www.meadowsps.com/support).