Index: /trunk/src/VBox/Frontends/VirtualBox/src/net/UIUpdateManager.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/net/UIUpdateManager.cpp	(revision 55738)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/net/UIUpdateManager.cpp	(revision 55739)
@@ -210,5 +210,5 @@
 
         /* Newer version of necessary package found: */
-        if (strResponseData.indexOf(QRegExp("^\\d+\\.\\d+\\.\\d+ \\S+$")) == 0)
+        if (strResponseData.indexOf(QRegExp("^\\d+\\.\\d+\\.\\d+(_[0-9A-Z]+)? \\S+$")) == 0)
         {
             QStringList response = strResponseData.split(" ", QString::SkipEmptyParts);