I cannot install the module either. here are some of the errors:

I get this after adding the module to a page:

A critical error has occurred.
Conversion from string "" to type 'Integer' is not valid.

And, I get this error after I try to configure settings in the module:

Error: Module 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.Exceptions.Exceptions.ProcessModuleLoadException(PortalModuleBase ctrlModule, Exception exc) at DNNMTL.Modules.DVD_Inventory.Settings.UpdateSettings() at DotNetNuke.Modules.Admin.Modules.ModuleSettingsPage.cmdUpdate_Click(Object Sender, EventArgs e) --- End of inner exception stack trace ---

Okay, I could not figure out the "uninstall", but did go to module definitions and deleted the module.

I then reinstalled the module and then created a new page and added the module to that page. Everything good so far. I then went to modify the settings and there was nothing to modify.  Under the "modify DVD ...... setting" it said "this is where you can have the DVD settings, etc. etc." or something like that, then when I got out of the settings, I got this error:

Error: Module 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.Exceptions.Exceptions.ProcessModuleLoadException(PortalModuleBase ctrlModule, Exception exc) at DNNMTL.Modules.DVD_Inventory.Settings.UpdateSettings() at DotNetNuke.Modules.Admin.Modules.ModuleSettingsPage.cmdUpdate_Click(Object Sender, EventArgs e) --- End of inner exception stack trace ---

Now what?