I've a clean installation of DNN 4.8.2 and DMX 4.2.1 and checked all configuration settings mentioned in the DocExPro 4 Installation doc.
I cannot open the categories, here the stack trace:
AssemblyVersion: 04.08.02
UserID: 1
UserName: host
RawURL: /WebAdmin/Dokumentenverwaltung/tabid/65/language/de-CH/Default.aspx?ctl=Categories&mid=404
InnerException: Object reference not set to an instance of an object.
Method: Bring2mind.DNN.Modules.DMX.Controls.WebControls.ShortTextEdit.CreateChildControls
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Bring2mind.DNN.Modules.DMX.Controls.WebControls.ShortTextEdit.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at Bring2mind.DNN.Modules.DMX.Controls.WebControls.ShortTextEdit.SaveViewState() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Control.SaveViewStateRecursive() at System.Web.UI.Page.SaveAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Thank you and best regards