diff -ru anaconda-11.1.2.263.orig/partedUtils.py anaconda-11.1.2.263/partedUtils.py
--- anaconda-11.1.2.263.orig/partedUtils.py	2014-01-20 13:09:38.166469000 -0500
+++ anaconda-11.1.2.263/partedUtils.py	2014-01-20 14:49:08.673144000 -0500
@@ -533,6 +533,9 @@
     return None
 
 def getReleaseString(mountpoint):
+    arch = '32'
+    if os.path.isdir(mountpoint + "/usr/lib64"):
+        arch = '64'
     if os.access(mountpoint + "/etc/e-smith-release", os.R_OK):
         f = open(mountpoint + "/etc/e-smith-release", "r")
         try:
@@ -567,8 +570,8 @@
                     relstr = prod + " " + ver
             except:
                 pass # don't worry, just use the relstr as we have it
-        return relstr
-    return ""
+        return (relstr, arch)
+    return ()
 
 def productMatches(oldproduct, newproduct):
     """Determine if this is a reasonable product to upgrade old product"""
@@ -829,7 +832,7 @@
 
             if found:
                 if os.access (self.anaconda.rootPath + '/etc/fstab', os.R_OK):
-                    relstr = getReleaseString(self.anaconda.rootPath)
+                    (relstr, arch) = getReleaseString(self.anaconda.rootPath)
 
                     if ((upgradeany == 1) or
                         (productMatches(relstr, productName))):
@@ -838,7 +841,7 @@
                         except:
                             label = None
             
-                        rootparts.append ((theDev, fs, relstr, label))
+                        rootparts.append ((theDev, fs, relstr, label, arch))
                 isys.umount(self.anaconda.rootPath)
 
         # now, look for candidate lvm roots
@@ -873,7 +876,7 @@
 
             if found:
                 if os.access (self.anaconda.rootPath + '/etc/fstab', os.R_OK):
-                    relstr = getReleaseString(self.anaconda.rootPath)
+                    (relstr, arch) = getReleaseString(self.anaconda.rootPath)
                     
                     if ((upgradeany == 1) or
                         (productMatches(relstr, productName))):
@@ -882,7 +885,7 @@
                         except:
                             label = None
             
-                        rootparts.append ((theDev, fs, relstr, label))
+                        rootparts.append ((theDev, fs, relstr, label, arch))
                 isys.umount(self.anaconda.rootPath)
 
 	lvm.vgdeactivate()
@@ -940,7 +943,7 @@
                         part = disk.next_partition(part)
 			continue
 		    if os.access (self.anaconda.rootPath + '/etc/fstab', os.R_OK):
-                        relstr = getReleaseString(self.anaconda.rootPath)
+                        (relstr, arch) = getReleaseString(self.anaconda.rootPath)
 
                         if ((upgradeany == 1) or
                             (productMatches(relstr, productName))):
@@ -950,7 +953,7 @@
                                 label = None
             
                             rootparts.append ((theDev, fstype,
-                                               relstr, label))
+                                               relstr, label, arch))
 		    isys.umount(self.anaconda.rootPath)
                     
                 part = disk.next_partition(part)
diff -ru anaconda-11.1.2.263.orig/textw/upgrade_text.py anaconda-11.1.2.263/textw/upgrade_text.py
--- anaconda-11.1.2.263.orig/textw/upgrade_text.py	2014-01-20 13:09:38.186525000 -0500
+++ anaconda-11.1.2.263/textw/upgrade_text.py	2014-01-20 15:09:05.919627000 -0500
@@ -194,6 +194,12 @@
     def __call__ (self, screen, anaconda):
         parts = anaconda.id.rootParts
 
+        cur_arch = os.uname()[4]
+        if cur_arch == 'i686':
+            cur_arch = '32'
+        else:
+            cur_arch = '64'
+
         height = min(len(parts), 11) + 1
         if height == 12:
             scroll = 1
@@ -202,8 +208,42 @@
         partList = []
         partList.append(_("Erase ALL disks, and perform a fresh install"))
 
-        for (drive, fs, desc, label) in parts:
-            partList.append(_("Upgrade existing \"%s\" system") %(desc))
+        sys_is_not_upgradeable = 0
+
+        upgradeable_partitions = len(parts)
+        if upgradeable_partitions != 1:
+            sys_is_not_upgradeable = 1
+            header = _("System has problem")
+            reason = _("Your system is not upgradeable. There is more than one SME server partition.")
+
+        (drive, fs, desc, label, arch) = parts[0]
+        if arch != cur_arch:
+            sys_is_not_upgradeable = 1
+            header = _("Wrong SME server version")
+            reason = _("Your system is not upgradeable using this version of SME server. The currently installed system is a %s bit version, but this version of SME server is a %s bit version.") % (arch, cur_arch)
+
+        if sys_is_not_upgradeable:
+             partList.append(_("Reboot system"))
+             (button, choice) =  ListboxChoiceWindow(screen, header,
+                             reason, partList,
+                                                 [ TEXT_OK_BUTTON,
+                                                   TEXT_BACK_BUTTON ],
+                                                 width = 55, scroll = scroll,
+                                                 height = height,
+                                                 help = "upgraderoot",
+                                                 default = 1)
+
+             if button == TEXT_BACK_CHECK:
+                 return INSTALL_BACK
+             else:
+                 if choice == 0:
+                     anaconda.dispatch.skipStep("installtype", skip = 0)
+                     anaconda.id.upgradeRoot = None
+                     return INSTALL_OK
+                 else:
+                     sys.exit(1)
+
+        partList.append(_("Upgrade existing \"%s\" system") %(desc))
 
         (button, choice) =  ListboxChoiceWindow(screen, _("System to Upgrade"),
                             _("Your system is upgradeable."), partList,
diff -ru anaconda-11.1.2.263.orig/upgrade.py anaconda-11.1.2.263/upgrade.py
--- anaconda-11.1.2.263.orig/upgrade.py	2014-01-20 13:09:38.196525000 -0500
+++ anaconda-11.1.2.263/upgrade.py	2014-01-20 15:09:54.103502000 -0500
@@ -108,7 +108,7 @@
         anaconda.id.rootParts = findExistingRoots(anaconda)
 
     anaconda.id.upgradeRoot = []
-    for (dev, fs, meta, label) in anaconda.id.rootParts:
+    for (dev, fs, meta, label, arch) in anaconda.id.rootParts:
         anaconda.id.upgradeRoot.append( (dev, fs) )
 
     if len(anaconda.id.rootParts) == 0 and anaconda.isKickstart:
@@ -131,7 +131,7 @@
 
 def findExistingRoots(anaconda, upgradeany = 0):
     if not flags.setupFilesystems:
-        relstr = partedUtils.getReleaseString (anaconda.rootPath)
+        (relstr, arch) = partedUtils.getReleaseString (anaconda.rootPath)
         if ((flags.cmdline.has_key("upgradeany")) or
             (upgradeany == 1) or
             (partedUtils.productMatches(relstr, productName))):