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Intermittent error message Directory Not found Exception


We get an intermittent error message about a file not found in the cache folder.
The document it is looking for however is in the processing folder
We are using V2.19 of the Viewer software.

Exception information:
Exception type: DirectoryNotFoundException
Exception message: Could not find a part of the path ‘\inf-file-001\GroupDocs\temp\Cache\xxxx_Live\UI0004-08.07.201915542885.pdf’.
at Groupdocs.Web.UI.Handlers.BaseAspNetHandler.OnException(Exception exception, HttpContext context)
at Groupdocs.Web.UI.Handlers.BaseAspNetHandler.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)



You are using a very old version of GroupDocs.Viewer for .NET which is now obsolete and its support has been discontinued. Starting from v3.0.0, we have released our next generation API which is completely different from the older versions. We have detached the front end UI from the back end API which has made GroupDocs.Viewer a more flexible and UI independent document rendering API. We recommend you to please have a look at the documentation of the next generation API and then migrate to the latest release.

Since this is now a backend API, you can create your own front end based on your requirements. In case you don’t want to develop your own front end from scratch, you can use our open-source document viewer applications which are based on GroupDocs.Viewer for .NET. You can download these applications from the following links and give them a try.