MT-100 fix for extension .pmx and .pmx2

workflow/engine/templates/processes/main.js

@@ -994,6 +994,8 @@ function exportProcess() {
     if (record.length == 1) {
         if (Ext.getCmp('exportProcessObjectsWindow')) {
             Ext.getCmp('exportProcessObjectsWindow').close();
+        } else {
+            processObjectsArray = '';
         }
         var myMask = new Ext.LoadMask(Ext.getBody(), {msg: _("ID_LOADING")});
         var proUid = record[0].get("PRO_UID");
@@ -1014,7 +1016,12 @@ function exportProcess() {
                 if (result.success) {
                     window.location = "../processes/processes_DownloadFile?file_hash=" + result.file_hash;
                 } else {
-          Ext.Msg.show({title: "", msg: result.message, icon: Ext.MessageBox.ERROR, buttons: Ext.MessageBox.OK});
+                    Ext.Msg.show({
+                        title: "",
+                        msg: result.message,
+                        icon: Ext.MessageBox.ERROR,
+                        buttons: Ext.MessageBox.OK
+                    });
                 }
             },