--- a/app/view/form/Messung.js	Fri Jul 10 10:07:39 2015 +0200
+++ b/app/view/form/Messung.js	Fri Jul 10 10:20:13 2015 +0200
@@ -108,6 +108,7 @@
                 }, {
                     xtype: 'chkbox',
                     name: 'geplant',
+                    readOnly: true,
                     margin: '0, 10, 5, 0',
                     fieldLabel: 'Geplant',
                     width: 300,
@@ -171,7 +172,6 @@
         this.down('messmethode[name=mmtId]').setReadOnly(value);
         this.down('datetime[name=messzeitpunkt]').setReadOnly(value);
         this.down('numberfield[name=messdauer]').setReadOnly(value);
-        this.down('chkbox[name=geplant]').setReadOnly(value);
         if (!this.getForm().getRecord().get('owner')) {
         //Only set this Field to Readonly when the User is NOT the Owner of the Record.
             this.down('chkbox[name=fertig]').setReadOnly(value);