You shoud add following line in <system.web> section of your web.config file:   <pages enableEventValidation=''false'' />

Shai,   We have other clients who resolved this problem by adding following entry in your web.config file:   <add key=''CuteChat.DisableZipCompress'' value=''true'' />   Keep me posted  

Thanks Adam!

Can you add the following code into your web.config then try again?   <globalization requestEncoding=''utf-8'' responseEncoding=''utf-8'' />

Chris,   Please delete this file: cutesoft_client\cuteeditor\web.config  

 My site web.config got  <pages maintainScrollPositionOnPostBack=''true''> If I set it to false it would work. Where and what can I customize in your control to make it work?  

2. If not, try add the following entry to your web.config file:   <add key=''CuteEditorEnableGZip'' value=''False'' />   Keep me posted

dlmcdanl,   Can you check your web.config file?   Is there a control which rewrite the URL?

Try the steps below.   1. Create a folder under and name it ''CuteEditorTemp''.   2. Open your web.config and add the following entry:   <add key=''CuteEditorTempPath'' value=''~/CuteEditorTemp'' />   Keep me posted    

Hi itmlc,   Please try the setting below in your web.config. It should fix this error.   <httpRuntime requestValidationMode=″2.0″ />   Regards,   Ken