Buy Now module on home page crashes with this error

version 4.50

ssemblyVersion: 6.0.0

PortalID: 0

PortalName: test

UserID: -1

UserName:

ActiveTabID: 59

ActiveTabName: Home

RawURL: /Default.aspx

AbsoluteURL: /Default.aspx

AbsoluteURLReferrer:

UserAgent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)

DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider

ExceptionGUID: 47166cfc-e683-4e76-bf49-b2cbeb7cb694

InnerException: Can't get ModuleId for given module name 'Smith.BuyNow'

FileName:

FileLineNumber: 0

FileColumnNumber: 0

Method: Smith.DNN.Modules.MiniCart.MiniCart.GetModuleIdByName

StackTrace:

Message: DotNetNuke.Services.Exceptions.PageLoadException: Can't get ModuleId for given module name 'Smith.BuyNow' ---> System.ApplicationException: Can't get ModuleId for given module name 'Smith.BuyNow' at Smith.DNN.Modules.MiniCart.MiniCart.GetModuleIdByName(Int32 tabId, String moduleName) at Smith.DNN.Modules.MiniCart.MiniCart.GetEUVATSettings() at Smith.DNN.Modules.MiniCart.MiniCart.Page_Load(Object sender, EventArgs e) at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

Source: