Hi,

I was trying to send testing newsletter email, but I get this error.

Log:

2015-09-07 10:29:36,680 [13] ERROR Umbraco.Core.UmbracoApplicationBase - [T38/D8] An unhandled exception occurred
System.FormatException: Vstupní řetězec nemá správný formát.
   v System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
   v System.String.Format(IFormatProvider provider, String format, Object[] args)
   v System.String.Format(String format, Object arg0)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsWorker(IEnumerable`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateGlobalScopeSelectors(IEnumerable`1 elements)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectors(IEnumerable`1 elements)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.ProcessDataIntoJsonObjects(IEnumerable`1 renderedOutputList)
   v Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.RequestDataHttpHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext context)
   v System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   v System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

2015-09-07 10:35:32,046 [13] INFO  Umbraco.Web.Scheduling.ScheduledTasks - [T18/D8] newsletterstudioSendout has been called with response: True

SMTP server is ok, if I try send test email on one address, it works fine.

UPDATE:

I was watching http headers in admin and I found error on this url http://localhost:19778/umbraco/backoffice/NewsletterStudio/SendContent/StartSendNewsletter/1623

Error message: not found file PackageGarden.Licensing, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

{"Message":"An error has occurred.","ExceptionMessage":"Nelze načíst soubor nebo sestavení PackageGarden.Licensing, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null nebo jeden z jejich závislých prvků. Systém nemůže nalézt uvedený soubor.","ExceptionType":"System.IO.FileNotFoundException","StackTrace":"   v NewsletterStudio.Web.Licensing.PackageGardenValidator.IsTrial()\r\n   v NewsletterStudio.Services.SendNewsletterService..ctor(Int32 newsletterId)\r\n ...

Thanks for answer

IK