diff --git a/ISLE/isle.cpp b/ISLE/isle.cpp
index f8d9711b..600c0fd8 100644
--- a/ISLE/isle.cpp
+++ b/ISLE/isle.cpp
@@ -87,8 +87,7 @@ void Isle::close()
 
     VideoManager()->Get3DManager()->GetLego3DView()->GetViewManager()->RemoveAll(NULL);
 
-    long local_88 = 0;
-    Lego()->RemoveWorld(ds.GetAtomId(), local_88);
+    Lego()->RemoveWorld(ds.GetAtomId(), ds.GetUnknown1c());
     Lego()->vtable24(ds);
     TransitionManager()->SetWaitIndicator(NULL);
     Lego()->vtable3c();
diff --git a/LEGO1/mxatomid.cpp b/LEGO1/mxatomid.cpp
new file mode 100755
index 00000000..c4413f28
--- /dev/null
+++ b/LEGO1/mxatomid.cpp
@@ -0,0 +1,6 @@
+#include "mxatomid.h"
+
+MxAtomId::~MxAtomId()
+{
+  // TODO
+}
\ No newline at end of file
diff --git a/LEGO1/mxatomid.h b/LEGO1/mxatomid.h
index 3e3ce24b..4c0983c9 100644
--- a/LEGO1/mxatomid.h
+++ b/LEGO1/mxatomid.h
@@ -10,8 +10,13 @@ class MxAtomId
   __declspec(dllexport) MxAtomId &operator=(const MxAtomId &id);
   __declspec(dllexport) ~MxAtomId();
 
-  char *m_internal;
+  MxAtomId()
+  {
+    this->m_internal = 0;
+  };
 
+private:
+  char *m_internal;
 };
 
 #endif // MXATOMID_H
diff --git a/LEGO1/mxdsobject.cpp b/LEGO1/mxdsobject.cpp
index 13aa78ff..93c0febb 100644
--- a/LEGO1/mxdsobject.cpp
+++ b/LEGO1/mxdsobject.cpp
@@ -3,6 +3,28 @@
 #include <string.h>
 #include <stdlib.h>
 
+MxDSObject::MxDSObject()
+{
+  // The following code yields 100% matching assembly if m_unk24 is declared as (signed) short.
+  // However, in other areas m_unk24 (notably, ISLE.EXE) is treated as unsigned short.
+  // this->m_unk0c = 0;
+  // this->m_unk10 = 0;
+  // this->m_unk14 = 0;
+  // this->m_name = NULL;
+  // this->m_unk24 = -1;
+  // this->m_unk1c = -1;
+  // this->m_unk28 = 0;
+
+  // Assembly not matching but m_unk24 is unsigned short (probably correct)
+  this->m_unk0c = 0;
+  this->m_unk10 = 0;
+  this->m_unk14 = 0;
+  this->m_name = NULL;
+  this->m_unk24 = 0xFFFF;
+  this->m_unk1c = -1;
+  this->m_unk28 = 0;
+}
+
 void MxDSObject::SetObjectName(const char *p_name)
 {
   // TODO: instead of the expected CMP EAX,ESI we get CMP ESI,EAX
diff --git a/LEGO1/mxdsobject.h b/LEGO1/mxdsobject.h
index c1c71643..31320808 100644
--- a/LEGO1/mxdsobject.h
+++ b/LEGO1/mxdsobject.h
@@ -9,15 +9,19 @@ class MxDSObject : public MxCore
 public:
   __declspec(dllexport) void SetObjectName(const char *);
 
+  MxDSObject();
+
   inline const MxAtomId& GetAtomId() { return this->m_atomId; }
+  inline int GetUnknown1c() { return this->m_unk1c; }
+
   inline void SetAtomId(MxAtomId p_atomId) { this->m_atomId = p_atomId; }
   inline void SetUnkown1c(int p_unk1c) { this->m_unk1c = p_unk1c; }
   inline void SetUnknown24(unsigned short p_unk24) { this->m_unk24 = p_unk24; }
 
 private:
   int m_unk08;
-  int m_unk0c;
-  int m_unk10;
+  short m_unk0c;
+  char* m_unk10;
   int m_unk14;
   char *m_name;
   int m_unk1c;
diff --git a/isle.mak b/isle.mak
index 357edcc9..de1f256e 100644
--- a/isle.mak
+++ b/isle.mak
@@ -57,6 +57,7 @@ CLEAN :
 	-@erase "$(INTDIR)\dllmain.obj"
 	-@erase "$(INTDIR)\legonavcontroller.obj"
 	-@erase "$(INTDIR)\legoomni.obj"
+	-@erase "$(INTDIR)\mxatomid.obj"
 	-@erase "$(INTDIR)\mxautolocker.obj"
 	-@erase "$(INTDIR)\mxcore.obj"
 	-@erase "$(INTDIR)\mxcriticalsection.obj"
@@ -129,6 +130,7 @@ LINK32_OBJS= \
 	"$(INTDIR)\dllmain.obj" \
 	"$(INTDIR)\legonavcontroller.obj" \
 	"$(INTDIR)\legoomni.obj" \
+	"$(INTDIR)\mxatomid.obj" \
 	"$(INTDIR)\mxautolocker.obj" \
 	"$(INTDIR)\mxcore.obj" \
 	"$(INTDIR)\mxcriticalsection.obj" \
@@ -168,6 +170,7 @@ CLEAN :
 	-@erase "$(INTDIR)\dllmain.obj"
 	-@erase "$(INTDIR)\legonavcontroller.obj"
 	-@erase "$(INTDIR)\legoomni.obj"
+	-@erase "$(INTDIR)\mxatomid.obj"
 	-@erase "$(INTDIR)\mxautolocker.obj"
 	-@erase "$(INTDIR)\mxcore.obj"
 	-@erase "$(INTDIR)\mxcriticalsection.obj"
@@ -244,6 +247,7 @@ LINK32_OBJS= \
 	"$(INTDIR)\dllmain.obj" \
 	"$(INTDIR)\legonavcontroller.obj" \
 	"$(INTDIR)\legoomni.obj" \
+	"$(INTDIR)\mxatomid.obj" \
 	"$(INTDIR)\mxautolocker.obj" \
 	"$(INTDIR)\mxcore.obj" \
 	"$(INTDIR)\mxcriticalsection.obj" \
@@ -284,6 +288,7 @@ CLEAN :
 	-@erase "$(INTDIR)\isle.obj"
 	-@erase "$(INTDIR)\isle.res"
 	-@erase "$(INTDIR)\main.obj"
+	-@erase "$(INTDIR)\mxatomid.obj"
 	-@erase "$(INTDIR)\mxomnicreateparambase.obj"
 	-@erase ".\Release\ISLE.EXE"
 
@@ -344,6 +349,7 @@ LINK32_OBJS= \
 	"$(INTDIR)\isle.obj" \
 	"$(INTDIR)\isle.res" \
 	"$(INTDIR)\main.obj" \
+	"$(INTDIR)\mxatomid.obj" \
 	"$(INTDIR)\mxomnicreateparambase.obj" \
 	".\Release\LEGO1.LIB"
 
@@ -374,6 +380,7 @@ CLEAN :
 	-@erase "$(INTDIR)\isle.obj"
 	-@erase "$(INTDIR)\isle.res"
 	-@erase "$(INTDIR)\main.obj"
+	-@erase "$(INTDIR)\mxatomid.obj"
 	-@erase "$(INTDIR)\mxomnicreateparambase.obj"
 	-@erase "$(INTDIR)\vc40.idb"
 	-@erase "$(INTDIR)\vc40.pdb"
@@ -438,6 +445,7 @@ LINK32_OBJS= \
 	"$(INTDIR)\isle.obj" \
 	"$(INTDIR)\isle.res" \
 	"$(INTDIR)\main.obj" \
+	"$(INTDIR)\mxatomid.obj" \
 	"$(INTDIR)\mxomnicreateparambase.obj" \
 	".\LEGO1\Debug\LEGO1.lib"
 
@@ -736,6 +744,19 @@ DEP_CPP_MXDSO=\
    $(CPP) $(CPP_PROJ) $(SOURCE)
 
 
+# End Source File
+################################################################################
+# Begin Source File
+
+SOURCE=.\LEGO1\mxatomid.cpp
+DEP_CPP_MXATO=\
+	".\LEGO1\mxatomid.h"\
+	
+
+"$(INTDIR)\mxatomid.obj" : $(SOURCE) $(DEP_CPP_MXATO) "$(INTDIR)"
+   $(CPP) $(CPP_PROJ) $(SOURCE)
+
+
 # End Source File
 # End Target
 ################################################################################
@@ -858,9 +879,7 @@ DEP_CPP_ISLE_=\
 	".\LEGO1\mxticklemanager.h"\
 	".\LEGO1\mxtimer.h"\
 	".\LEGO1\mxtransitionmanager.h"\
-	".\LEGO1\mxvariabletable.h"\
 	".\LEGO1\mxvideoparam.h"\
-	".\LEGO1\mxvideoparamflags.h"\
 	".\LEGO1\viewmanager.h"\
 	
 
@@ -960,9 +979,7 @@ DEP_CPP_MAIN_=\
 	".\LEGO1\mxticklemanager.h"\
 	".\LEGO1\mxtimer.h"\
 	".\LEGO1\mxtransitionmanager.h"\
-	".\LEGO1\mxvariabletable.h"\
 	".\LEGO1\mxvideoparam.h"\
-	".\LEGO1\mxvideoparamflags.h"\
 	".\LEGO1\viewmanager.h"\
 	
 
@@ -1445,6 +1462,19 @@ SOURCE=.\LEGO1\mxvideoparamflags.h
 !ENDIF 
 
 # End Project Dependency
+################################################################################
+# Begin Source File
+
+SOURCE=.\LEGO1\mxatomid.cpp
+DEP_CPP_MXATO=\
+	".\LEGO1\mxatomid.h"\
+	
+
+"$(INTDIR)\mxatomid.obj" : $(SOURCE) $(DEP_CPP_MXATO) "$(INTDIR)"
+   $(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+# End Source File
 # End Target
 # End Project
 ################################################################################
diff --git a/isle.mdp b/isle.mdp
index 492da89e..33674c1f 100644
Binary files a/isle.mdp and b/isle.mdp differ