Hello:

I seem to have lost the ability to access the file manager in my installation of DNN 7.00.04. I get the following error:

Error: File Manager is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Services.FileSystem.FolderMappingInfo.get_ImageUrl() at DotNetNuke.Modules.Admin.FileManager.FileManager.PreloadFolderImages() at DotNetNuke.Modules.Admin.FileManager.FileManager.InitializeTree() at DotNetNuke.Modules.Admin.FileManager.FileManager.OnLoad(EventArgs e) --- End of inner exception stack trace ---

I have Googled the error, and I've only managed to find posts from the issue cropping up in DNN 4 or 5; the difference between those issues and this is that this error doesn't reference a line number in a specific file, so I'm not sure where to begin. Here's what I've done so far:

1. I have tried to get to the file manager through the Admin and Host menus. Same error both times.

2. I have tried restarting the application. No change.

3. I have checked the DNN installation file structure for folders with special characters in their names, via an FTP utility. No such characters were found.

 I'm running out of ideas here. Does anyone know anything else I can do?

 Thanks.