It does not matter if you are using Built in Skins or DLL. It is a CSS limitation that prevents IE to load more than 31 Stylesheets on a page. The styles could come from a DLL or to be manually inserted into the project. IE does not care how they were loaded, it just loads 31 of them and the styles from the next files will not be loaded on the page.
Each Telerik control uses at least two stylesheets, a few controls use ten or even more, so if you have several controls on the page, it is possible that you have more than 31 stylesheets.
There is a blog post on our website: Internet Explorer CSS Limits
where the problem is described in detail and suggests several ways to fix the issue.
But in shortly, I will suggest you to add RadStyleSheetManager
to your application. RadStyleSheetManager
control gives developers the advantage of a simple drag-and-drop to achieve the combination of resources to a single request. All you need is to add a RadStyleSheetManager
to your page and the stylesheet requests will be combined into a single request.
All the best,
the Telerik team
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