We're seeing the following message on iPhone while tracking mobile site traffic.
"Error: SECURITY_ERR:DOM Exception 18"

I've debugged the javascript and it seems that although we explicitly set disableCookies in our init code, Piwik still tries to access cookies (if only to expire them). For now I've just wrapped the offending code in a try/catch, but I'd appreciate a more elegant fix in a future release.

if (configCookiesDisabled) {
   // Temporarily allow cookies just to delete the existing ones
   configCookiesDisabled = false;
   try{  
      setCookie(idname, '', -86400, configCookiePath, configCookieDomain);
      setCookie(sesname, '', -86400, configCookiePath, configCookieDomain);
      setCookie(cvarname, '', -86400, configCookiePath, configCookieDomain);
      setCookie(refname, '', -86400, configCookiePath, configCookieDomain);
   }catch(err){}
   configCookiesDisabled = true;
}

Perhaps another parameter to deal with removing existing cookies would be a more explicit approach? configCookiesDisabled && configDeleteCookies ?

Thanks
Keywords: javascript cookie