<apex:component controller="SiteLoginController" id="loginComponent">
    <apex:form id="loginForm" forceSSL="true">
        <apex:outputPanel layout="block">
            <apex:pageMessages id="error" />
            <apex:panelGrid columns="2" style="margin-top:1em;">             
                <apex:outputLabel value="{!$Label.site.username}" for="username" />
                <apex:inputText id="username" value="{!username}" />
                <apex:outputLabel value="{!$Label.site.password}" for="password" />
                <apex:inputSecret id="password" value="{!password}" />             
                <br />
                <apex:commandButton action="{!login}"
                    value="{!$Label.site.login_button}" id="loginButton" />
                <br />
                <apex:panelGroup id="theLinks">                     
                    <apex:outputLink value="{!$Page.ForgotPassword}">
                        {!$Label.site.forgot_your_password_q}
                    </apex:outputLink>                     
                    <apex:outputText value=" | " rendered="{!$Site.RegistrationEnabled}" />
                    <apex:outputLink value="{!$Page.SiteRegister}" rendered="{!$Site.RegistrationEnabled}">
                        {!$Label.site.new_user_q}
                    </apex:outputLink>                     
                </apex:panelGroup>
            </apex:panelGrid>
        </apex:outputPanel>
    </apex:form>
</apex:component>

 Everytime I try to save a visualforce page in the setup section I get the following error:Error: <apex:page> is required and must be the outermost tag in the markup at line 1 column 1

I get the error if i edit the page, if i try to rename the file or even if i open it up and just hit save. This is happening on all visualforce pages. Any ideas? My Code: (This is just the standard SFDC Login Visualforce page.