First I got an exception : System.Web.HttpRequestValidationException (0x80004005): A potentially dangerous Request.Form value.... from searching the web I found that adding to my web.config :
<system.web>
<httpRuntime requestValidationMode="2.0" />
</system.web>
should solve the problem, but I get an error : requestValidationMode is not allowed. I am using framework 3.5, maybe thats the reason... can someone help ?