diff --git a/src/Mod/Arch/ArchCommands.py b/src/Mod/Arch/ArchCommands.py
index 63b5055b6..52cf96397 100644
--- a/src/Mod/Arch/ArchCommands.py
+++ b/src/Mod/Arch/ArchCommands.py
@@ -165,6 +165,9 @@ def removeComponents(objectsList,host=None):
                        s.remove(o)
                        h.Subtractions = s
                        o.ViewObject.show()
+                   elif o == s.Base:
+                       s.Base = None
+                       o.ViewObject.show()
                elif tp in ["SectionPlane"]:
                    a = h.Objects
                    if o in a:
@@ -569,7 +572,7 @@ class _CommandRemove:
     def Activated(self):
         sel = FreeCADGui.Selection.getSelection()
         FreeCAD.ActiveDocument.openTransaction(str(translate("Arch","Ungrouping")))
-        if Draft.getType(sel[-1]) in ["Wall","Structure"]:
+        if (Draft.getType(sel[-1]) in ["Wall","Structure"]) and (len(sel) > 1):
             host = sel.pop()
             ss = "["
             for o in sel:
@@ -581,7 +584,7 @@ class _CommandRemove:
             FreeCADGui.doCommand("Arch.removeComponents("+ss+",FreeCAD.ActiveDocument."+host.Name+")")
         else:
             FreeCADGui.doCommand("import Arch")
-            FreeCADGui.doCommand("Arch.removeComponents("+ss+")")
+            FreeCADGui.doCommand("Arch.removeComponents(Arch.ActiveDocument."+sel[-1].Name+")")
         FreeCAD.ActiveDocument.commitTransaction()
         FreeCAD.ActiveDocument.recompute()
 
diff --git a/src/Mod/Arch/ArchWall.py b/src/Mod/Arch/ArchWall.py
index 5af1c7481..e4a7f4bb7 100644
--- a/src/Mod/Arch/ArchWall.py
+++ b/src/Mod/Arch/ArchWall.py
@@ -472,6 +472,10 @@ class _ViewProviderWall(ArchComponent.ViewProviderComponent):
 
     def getIcon(self):
         import Arch_rc
+        if hasattr(self,"Object"):
+            for o in self.Object.OutList:
+                if Draft.getType(o) == "Wall":
+                    return ":/icons/Arch_Wall_Tree_Assembly.svg"
         return ":/icons/Arch_Wall_Tree.svg"
 
     def getDisplayModes(self,vobj):
diff --git a/src/Mod/Arch/Arch_rc.py b/src/Mod/Arch/Arch_rc.py
index ea96da63c..2bc77e48c 100644
--- a/src/Mod/Arch/Arch_rc.py
+++ b/src/Mod/Arch/Arch_rc.py
@@ -2,7 +2,7 @@
 
 # Resource object code
 #
-# Created: Sun Mar 24 15:50:46 2013
+# Created: Wed Apr 17 16:59:58 2013
 #      by: The Resource Compiler for PyQt (Qt v4.8.2)
 #
 # WARNING! All changes made in this file will be lost!
@@ -27968,6 +27968,163 @@ qt_resource_data = "\
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 \xf5\xc0\x77\
+\x00\x00\x09\xaf\
+\x00\
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 \x00\
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@@ -33045,6 +33202,11 @@ qt_resource_name = "\
 \x00\x41\
 \x00\x72\x00\x63\x00\x68\x00\x5f\x00\x43\x00\x65\x00\x6c\x00\x6c\x00\x5f\x00\x54\x00\x72\x00\x65\x00\x65\x00\x2e\x00\x73\x00\x76\
 \x00\x67\
+\x00\x1b\
+\x08\x25\x0d\x47\
+\x00\x41\
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 \x00\x0d\
 \x09\x3c\x92\x47\
 \x00\x41\
@@ -33179,8 +33341,8 @@ qt_resource_name = "\
 
 qt_resource_struct = "\
 \x00\x00\x00\x00\x00\x02\x00\x00\x00\x03\x00\x00\x00\x01\
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 \x00\x00\x02\x92\x00\x00\x00\x00\x00\x01\x00\x06\x6c\x9e\
@@ -33205,35 +33367,36 @@ qt_resource_struct = "\
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 "
diff --git a/src/Mod/Arch/Resources/Arch.qrc b/src/Mod/Arch/Resources/Arch.qrc
index 452ecf5b5..8197a7a2c 100644
--- a/src/Mod/Arch/Resources/Arch.qrc
+++ b/src/Mod/Arch/Resources/Arch.qrc
@@ -30,6 +30,7 @@
         <file>icons/Arch_Check.svg</file>
         <file>icons/Arch_SelectNonManifold.svg</file>
         <file>icons/Arch_MergeWalls.svg</file>
+        <file>icons/Arch_Wall_Tree_Assembly.svg</file>
         <file>ui/archprefs-base.ui</file>
         <file>translations/Arch_af.qm</file>
         <file>translations/Arch_de.qm</file>
diff --git a/src/Mod/Arch/Resources/icons/Arch_Wall_Tree_Assembly.svg b/src/Mod/Arch/Resources/icons/Arch_Wall_Tree_Assembly.svg
new file mode 100644
index 000000000..57db4d808
--- /dev/null
+++ b/src/Mod/Arch/Resources/icons/Arch_Wall_Tree_Assembly.svg
@@ -0,0 +1,415 @@
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