In an attempt at improving the performance of our website application I have installed the AjaxControlToolkit Static Resources via Visual Studio 2013's Manage NuGet Packages feature.
I undertook all the manual steps required as stated [here](https://ajaxcontroltoolkit.codeplex.com/wikipage?title=How%20to%20use%20bundling%20and%20CDN)
Prior to the installation of the AjaxControlToolkit Static Resources I had no issues publishing the site using File System as the publishing method.
Now the site cannot be published as the following error is obtained:-
Copying file packages\AjaxControlToolkit.StaticResources.15.1.4.0\Content\Content\AjaxControlToolkit\Styles\HtmlEditor.Popups.AttachedTemplatePopup.min.css to C:\Users\mynamehere.ourdomain\AppData\Local\Temp\WebSitePublish\ManzenTrunk-1877587068\obj\Debug\AspnetCompileMerge\Source\packages\AjaxControlToolkit.StaticResources.15.1.4.0\Content\Content\AjaxControlToolkit\Styles\HtmlEditor.Popups.AttachedTemplatePopup.min.css failed. The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
The issue is obviously associated with the introduction of AjaxControlToolkit Static Resources as publishing was fine until the feature was added.
Any help/advice/fixes would be appreciated
Comments: This error clearly says that the destination file path is too long, because Windows has a [file path length limitation](http://stackoverflow.com/questions/1880321/why-does-the-260-character-path-length-limit-exist-in-windows). Try publishing it to another directory with a shorter path.
I undertook all the manual steps required as stated [here](https://ajaxcontroltoolkit.codeplex.com/wikipage?title=How%20to%20use%20bundling%20and%20CDN)
Prior to the installation of the AjaxControlToolkit Static Resources I had no issues publishing the site using File System as the publishing method.
Now the site cannot be published as the following error is obtained:-
Copying file packages\AjaxControlToolkit.StaticResources.15.1.4.0\Content\Content\AjaxControlToolkit\Styles\HtmlEditor.Popups.AttachedTemplatePopup.min.css to C:\Users\mynamehere.ourdomain\AppData\Local\Temp\WebSitePublish\ManzenTrunk-1877587068\obj\Debug\AspnetCompileMerge\Source\packages\AjaxControlToolkit.StaticResources.15.1.4.0\Content\Content\AjaxControlToolkit\Styles\HtmlEditor.Popups.AttachedTemplatePopup.min.css failed. The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
The issue is obviously associated with the introduction of AjaxControlToolkit Static Resources as publishing was fine until the feature was added.
Any help/advice/fixes would be appreciated
Comments: This error clearly says that the destination file path is too long, because Windows has a [file path length limitation](http://stackoverflow.com/questions/1880321/why-does-the-260-character-path-length-limit-exist-in-windows). Try publishing it to another directory with a shorter path.