--- a/calendar/lightning/content/imip-bar-overlay.xul
+++ b/calendar/lightning/content/imip-bar-overlay.xul
@@ -59,17 +59,17 @@
     <script type="application/javascript"
             src="chrome://lightning/content/imip-bar.js"/>
     <script type="application/javascript"
             src="chrome://calendar/content/calendar-management.js"/>
     <script type="application/javascript"
             src="chrome://calendar/content/calendar-ui-utils.js"/>
 
     <vbox id="messagepanebox">
-      <vbox id="singlemessage">
+      <vbox id="singlemessage" insertbefore="msgHeaderView">
         <lightning-notification-bar id="imip-bar"
                                     collapsed="true"
                                     insertbefore="msgHeaderView"
                                     label="&lightning.imipbar.description;">
           <button id="imip-button1" hidden="true"/>
           <button id="imip-button2" hidden="true"/>
           <button id="imip-button3" hidden="true"/>
         </lightning-notification-bar>

--- a/calendar/lightning/install.rdf
+++ b/calendar/lightning/install.rdf
@@ -6,17 +6,17 @@
 
   <Description about="urn:mozilla:install-manifest">
     <!-- Target Application this extension can install into, 
         with minimum and maximum supported versions. --> 
     <em:targetApplication>
       <Description>
         <!-- thunderbird -->
         <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
-        <em:minVersion>3.0b3pre</em:minVersion>
+        <em:minVersion>3.0b2</em:minVersion>
         <em:maxVersion>@THUNDERBIRD_VERSION@</em:maxVersion>
       </Description>
     </em:targetApplication>
 
 #if LIGHTNING_FIREFOX
     <!-- We only allow installation of Lightning into Firefox for ease of
        - development. You can edit the JS and then click reload in Firefox as
        - opposed to having to restart Thunderbird after each edit. -->