I have setup a coupon with every single option possible and they all crash with "Invalid object name 'Smith_StoreOrders." When I apply the coupon in the cart with a product loaded.

DNN: 5.6.2

SmithCart: 4.32

Here is the detailed error from the logs

AssemblyVersion: 5.6.2
PortalID: 0
PortalName: SwingSurgeon
UserID: 141308
UserName: test123
ActiveTabID: 993
ActiveTabName: Surge's Shop
RawURL: /SurgesShop/tabid/993/ctl/Cart/mid/2142/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: https://www.swingsurgeon.com/SurgesShop/tabid/993/ctl/Cart/mid/2142/Default.aspx
UserAgent: Mozilla/5.0 (X11; Linux x86_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: ee49c950-8719-4a75-9129-a4f5872e37bd
InnerException: Invalid object name 'Smith_StoreOrders'.
FileName: 
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Data.SqlClient.SqlConnection.OnError
StackTrace: 
Message: DotNetNuke.Services.Exceptions.PageLoadException: Invalid object name 'Smith_StoreOrders'. ---> System.Data.SqlClient.SqlException: Invalid object name 'Smith_StoreOrders'. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, String commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) at Smith.DNN.Modules.BuyNow.SqlDataProvider.ListStoreOrdersByFilter(Int32 PageNum, Int32 PageSize, String SortField, String SortOrder, String Filter, String SearchText, Int32 CustomerID, Int32 PortalID) at Smith.DNN.Modules.BuyNow.SqlDataProvider.ListStoreOrdersByFilter(Int32 PageNum, Int32 PageSize, String SortField, String SortOrder, String Filter, String SearchText, Int32 PortalID) at Smith.DNN.Modules.BuyNow.ProductsController.ListStoreOrdersByFilter(Int32 PageNum, Int32 PageSize, String SortField, String SortOrder, String Filter, String SearchText, Int32 PortalID) at Smith.DNN.Modules.BuyNow.Cart.ApplyCoupon() at Smith.DNN.Modules.BuyNow.Cart.btnCoupon_Click(Object sender, EventArgs e) at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source: 
Server Name: SWINGSURGEON

Kevin,

I quickly retest this.  Here is what is happening now.

Coupons that apply to everything work fine.  However, product level coupons throws the same error as stated above.

Using the coupon (setup as a product level coupon) on the wrong product does nothing which is good, the coupon is not applied.  But when I go to the product the coupon is set to discount it throws an error.  I will also email you.