The experienced behavior is not caused by an Editor's (or FileExplorer's) limitation, but indicates that the publishing was cancelled due to the ASP.NET validators detecting a dangerous input in the request path. This information concerns the following characters: <,>,*,%,&,:,\.
You could predefine the set of the restricted characters by both setting ValidateRequest="false"
to the page, containing the Editor and adding the following property in the <httpRuntime> section of the web.config:
More detailed information on the subject could be found here: HttpRuntimeSection.RequestPathInvalidCharacters Property
There is another set of characters, which are told to be unsaved or/and reserved ones. You can find detailed information about them here
There is also a third set of characters, which are restricted by the operating system itself - http://screencast.com/t/AxABxovEk7
In short, event if you configure your application to skip the path validation, there will remain symbols, which could not be used as a path to a file. I hope the following video will shed some light on the subject: video
You can also look at the following KB article, if you decide to restrict the using of such characters at all: How to notify the user that an image with invalid file name is being uploaded
Additionally, please note, that our support system assigns a response time for all questions, depending on the client's license. You can find detailed information regarding the different support plans and how to activate them here: Support Plans
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