I'm using DNN 6.2.2 and recently upgraded XModPro from 4.2 to 4.4. Everything was good with the first few forms I created. Now, however, whenever I try to apply a theme or change any of the other form settings in the form builder, I get the following

{"success": false, "msg":"Format of the initialization string does not conform to specification starting at index 0. at KnowBetter.XModPro.DataSources.SqlDataSource.DatabaseUtilities.TableExists(String TableName, DBConfig config, Boolean IncludeViews) at KnowBetter.XModPro.KBXM_DUtils.GetTableByName(DBConfig config, String TableName, Boolean IgnoreUnknownDataTypes) at KnowBetter.XModPro.KBXM_DUtils.GenerateFormFromXml(DBConfig config, String FormName, String xmlString, Int32 newPortalId, Boolean bIsPreview)","data":null}

When I first build the form, edit field properties, etc., the form saves just fine. It's only when I try to use a feature from the Buttons or Styling tab that I get the error.

Any advice?

Thanks