diff -u8pdNr d:\mozilla\erweiterungen\calendaralarmslider\110/chrome/content/prefs.xul d:\mozilla\erweiterungen\calendaralarmslider\120/chrome/content/prefs.xul
--- d:\mozilla\erweiterungen\calendaralarmslider\110/chrome/content/prefs.xul	2012-12-26 15:36:29.989948200 +0100
+++ d:\mozilla\erweiterungen\calendaralarmslider\120/chrome/content/prefs.xul	2018-11-13 19:52:58.718420700 +0100
@@ -1,14 +1,15 @@
 <?xml version="1.0"?>
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
 <?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://messenger/skin/preferences/preferences.css" type="text/css" ?>
 <!DOCTYPE dialog SYSTEM "chrome://calalarmslider/locale/prefs.dtd">
 <?xml-stylesheet href="chrome://calalarmslider/skin/prefs.css" type="text/css"?>
 
 <prefwindow id="calalarmslider-prefs"
             title="&calalarmslider.preferences.title;"
 			width="440"
 			height="350"
             xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
diff -u8pdNr d:\mozilla\erweiterungen\calendaralarmslider\110/install.rdf d:\mozilla\erweiterungen\calendaralarmslider\120/install.rdf
--- d:\mozilla\erweiterungen\calendaralarmslider\110/install.rdf	2016-08-08 18:36:06.006802500 +0200
+++ d:\mozilla\erweiterungen\calendaralarmslider\120/install.rdf	2018-11-13 20:09:01.023059300 +0100
@@ -1,17 +1,17 @@
 <?xml version="1.0"?>
 
 <RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
      xmlns:em="http://www.mozilla.org/2004/em-rdf#">
 
   <Description about="urn:mozilla:install-manifest">
     <em:name>Calendar Alarm Slider</em:name>
     <em:id>calalarmslider@nadelundhirn.de</em:id>
-    <em:version>1.1</em:version>
+    <em:version>1.2</em:version>
 
     <em:description>Alarm Slider for Sunbird and Lightning</em:description>
     <em:creator>Robert Brand</em:creator>
     <em:homepageURL>https://nadelundhirn.de/erweiterungen/calendar-alarm-slider/</em:homepageURL>
     <em:optionsURL>chrome://calalarmslider/content/prefs.xul</em:optionsURL>
 	<em:updateURL>http://www.nadelundhirn.de/krams/exten/calalarmslider/update.rdf</em:updateURL>
 	<em:updateKey>MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9Y2KoRlX8z726uLdVIkMFcDnDru8dR9fj6x63Tlk1PX+lhFtNXa83FZMDz/NdC84x5N9g18fAJinunQTQyfOlZpHdaNIvw1j3GSOKmAqhSndh0ZqnExHgOyEKqRxbx4dJYDPlhf7ZxixCyq5fHhLVmeyRdcIPsoVWneJ0gbSsRwIDAQAB</em:updateKey>
 
@@ -23,18 +23,18 @@
         <em:maxVersion>1.0</em:maxVersion>
       </Description>
     </em:targetApplication>
 	
 	<!-- Thunderbird -->
     <em:targetApplication>
       <Description>
         <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
-        <em:minVersion>18</em:minVersion>
-        <em:maxVersion>46.*</em:maxVersion>
+        <em:minVersion>60</em:minVersion>
+        <em:maxVersion>60.*</em:maxVersion>
       </Description>
     </em:targetApplication>
 
     <!-- SeaMonkey -->
     <em:targetApplication>
       <Description>
         <em:id>{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}</em:id>
         <em:minVersion>2.1</em:minVersion>
@@ -42,15 +42,15 @@
       </Description>
     </em:targetApplication>
 
     <em:requires>
       <Description>
         <!-- Lightning (also Sunbird via extension stub) -->
         <em:id>{e2fda1a4-762b-4020-b5ad-a41df1933103}</em:id>
         <em:minVersion>1.9</em:minVersion>
-        <em:maxVersion>4.9</em:maxVersion>
+        <em:maxVersion>6.*</em:maxVersion>
       </Description>
     </em:requires>
 
   </Description>
 
 </RDF>