I've had that happen twice now and not managed to find out why.

I then found out that it was only happening on one portal and only on my host account. The Admin and other accounts still worked. So I created a new host accounts and deleted the original one.

That may not be the same as your problem, but let me know if it is.

Back up before doing anything drastic.

Rob

ok, I probably won't be able to help much, but have you checked all the usual suspects:

Reset permissions on your site - sometimes a host might mess up the permissions whilst doing something else, which in turn can mess up upgrades and such.

In your web.config, ensure all this is correct:

    <htmlEditor defaultProvider="FckHtmlEditorProvider">
      <providers>
        <clear />
        <add name="FckHtmlEditorProvider" type="DotNetNuke.HtmlEditor.FckHtmlEditorProvider.FckHtmlEditorProvider, DotNetNuke.FckHtmlEditorProvider" providerPath="~/Providers/HtmlEditorProviders/Fck/" CustomConfigurationPath="~/Providers/HtmlEditorProviders/Fck/custom/FCKConfig.js" ..............  up to............ CustomOptionsDialog="host" />
      </providers>

Also, copy the FCK folder from the install.zip over to the /Providers/HtmlEditorProviders folder on your site in case something is corrupted.

If that doesn't fix it, try posting in the FCK Project forum for further help there.

Rob