I have an error at the bottom of my settings screen for the buy now module that says:

Error: Buy Now 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 Smith.DNN.Modules.BuyNow.Settings.LoadSettings() --- End of inner exception stack trace ---

I am having issues in another thread related to the product details page not showing due to a critical error. Not sure if this is related or not. Any thoughts?

This is what I gathered from the Event Viewer:

ModuleId: 939
ModuleDefId: 139
FriendlyName: Buy Now
ModuleControlSource: DesktopModules/Smith.BuyNow/ProductsList.ascx
AssemblyVersion: 5.6.1
PortalID: 4
PortalName: Ty Cobb - Museum
UserID: 1
UserName:
ActiveTabID: 442
ActiveTabName: Gift Store
RawURL: /GiftStore/tabid/442/ctl/Module/ModuleId/939/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; OfficeLiveConnector.1.4; OfficeLivePatch.1.3; .NET4.0C; .NET4.0E; BO1IE8_v1;ENUS)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 5cdbb4ac-534d-4a49-b102-e9bf0e02e4e6
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: Smith.DNN.Modules.BuyNow.Settings.LoadSettings
StackTrace:
Message: 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 Smith.DNN.Modules.BuyNow.Settings.LoadSettings() --- End of inner exception stack trace ---
Source:
Server Name: WEBSERV01