diff --git a/.gitignore b/.gitignore
index 5abcc3138..356bf6399 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,7 @@ output/*
 
 # a file generated by cmake
 dfhack/include/config.h
+library/private/config.h
 
 # any build folders
 build*/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4105db70d..b794b7143 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,11 @@ cmake_minimum_required(VERSION 2.6)
 SET(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/CMake/Modules)
 SET ( DFHACK_VERSION "0.4.1.0-dev" )
 
+# Set this to project source dir. When dfhack is used
+# as a submodule, CMAKE_SOURCE_DIR is not pointing to
+# the root where this particular CMakeLists.txt file sits.
+SET(CMAKE_SOURCE_DIR ${PROJECT_SOURCE_DIR})
+
 # disable warning, autosearch
 if(COMMAND cmake_policy)
   cmake_policy(SET CMP0003 NEW)
@@ -59,4 +64,4 @@ ENDIF(BUILD_DFHACK_PLAYGROUND)
 
 IF(BUILD_DFHACK_DOCUMENTATION)
     add_subdirectory (doc)
-ENDIF(BUILD_DFHACK_DOCUMENTATION)
\ No newline at end of file
+ENDIF(BUILD_DFHACK_DOCUMENTATION)
diff --git a/data/Memory.xml b/data/Memory.xml
index 87b296382..381e39708 100644
--- a/data/Memory.xml
+++ b/data/Memory.xml
@@ -2361,6 +2361,7 @@ map_data_1b60_offset          0x1B9c
     </Entry>
     <Entry version="v0.31.12" os="linux" id="30_12lin" base="30_11lin" rebase="-0x1000">
         <String name="md5">e79cead03187ecb692961b316b7cdcd4</String>
+        <Address name="screen_tiles_pointer">0x09487970</Address>
     </Entry>
     </MemoryDescriptors>
 </DFExtractor>
diff --git a/library/modules/Position.cpp b/library/modules/Position.cpp
index 1e5d48232..1395e59e3 100644
--- a/library/modules/Position.cpp
+++ b/library/modules/Position.cpp
@@ -178,10 +178,7 @@ bool Position::getScreenTiles (int32_t width, int32_t height, t_screen screen[])
     if(!d->Inited) return false;
     if(!d->StartedScreen) return false;
 
-    uint32_t screen_addr;
-    d->owner->readDWord(d->screen_tiles_ptr_offset,(uint32_t &) screen_addr);
-    //d->owner->read (d->screen_tiles_ptr_offset, sizeof(uint32_t), (uint8_t *) screen_addr);
-
+    uint32_t screen_addr = d->owner->readDWord(d->screen_tiles_ptr_offset);
     uint8_t* tiles = new uint8_t[width*height*4/* + 80 + width*height*4*/];
 
     d->owner->read (screen_addr, (width*height*4/* + 80 + width*height*4*/), (uint8_t *) tiles);
@@ -190,12 +187,12 @@ bool Position::getScreenTiles (int32_t width, int32_t height, t_screen screen[])
     {
         for(int32_t ix=0; ix<width; ix++)
         {
-            screen[ix + iy*width].symbol = tiles[iy*4 + ix*height*4 +0];
-            screen[ix + iy*width].foreground = tiles[iy*4 + ix*height*4 +1];
-            screen[ix + iy*width].background = tiles[iy*4 + ix*height*4 +2];
-            screen[ix + iy*width].bright = tiles[iy*4 + ix*height*4 +3];
-            screen[ix + iy*width].gtile = tiles[iy*4 + ix*height*4 +4];
-            screen[ix + iy*width].grayscale = tiles[iy*4 + ix*height*4 +5];
+            screen[ix + iy*width].symbol = tiles[(iy + ix*height)*4 +0];
+            screen[ix + iy*width].foreground = tiles[(iy + ix*height)*4 +1];
+            screen[ix + iy*width].background = tiles[(iy + ix*height)*4 +2];
+            screen[ix + iy*width].bright = tiles[(iy + ix*height)*4 +3];
+            //screen[ix + iy*width].gtile = tiles[width*height*4 + 80 + iy + ix*height +0];
+            //screen[ix + iy*width].grayscale = tiles[width*height*4 + 80 + iy + ix*height +1];
         }
     }
 
diff --git a/tools/examples/creaturedump.cpp b/tools/examples/creaturedump.cpp
index c18c3806f..316624d92 100644
--- a/tools/examples/creaturedump.cpp
+++ b/tools/examples/creaturedump.cpp
@@ -271,16 +271,17 @@ void printCreature(DFHack::Context * DF, const DFHack::t_creature & creature)
             }
         }
 
-		std::vector<uint32_t> inventory;
+        std::vector<uint32_t> inventory;
 
-		if( Creatures->ReadInventoryPtr(creature.origin, inventory) )
-		{
-			printf("\tInventory:\n");
-			for(unsigned int i = 0; i < inventory.size(); i++)
-			{
-				printf("\t\t%s\n", Items->getItemDescription(inventory[i], Materials).c_str());
-			}
-		}
+        if( Creatures->ReadInventoryPtr(creature.origin, inventory) )
+        {
+            DFHack::Items * Items = DF->getItems();
+            printf("\tInventory:\n");
+            for(unsigned int i = 0; i < inventory.size(); i++)
+            {
+                printf("\t\t%s\n", Items->getItemDescription(inventory[i], Materials).c_str());
+            }
+        }
 
         /*
         if(creature.pregnancy_timer > 0)
@@ -426,7 +427,6 @@ int main (int numargs, char ** args)
     
     Creatures = DF->getCreatures();
     Materials = DF->getMaterials();
-	Items = DF->getItems();
     World = DF->getWorld();
     current_year = World->ReadCurrentYear();
     current_tick = World->ReadCurrentTick();
diff --git a/tools/playground/copypaste.cpp b/tools/playground/copypaste.cpp
index 7dc97792a..dd304d5e9 100644
--- a/tools/playground/copypaste.cpp
+++ b/tools/playground/copypaste.cpp
@@ -159,15 +159,18 @@ int main (int numargs, const char ** args)
     }
     
     DFHack::Position *Pos = DF->getPosition();
-    DFHack::memory_info* mem = DF->getMemoryInfo();
+    DFHack::VersionInfo* mem = DF->getMemoryInfo();
     DFHack::Process * p = DF->getProcess();
-    uint32_t designations = mem->getOffset("map_data_designation");
-    uint32_t block_feature1 = mem->getOffset("map_data_feature_local");
-    uint32_t block_feature2 = mem->getOffset("map_data_feature_global");
-    uint32_t region_x_offset = mem->getAddress("region_x");
-    uint32_t region_y_offset = mem->getAddress("region_y");
-    uint32_t region_z_offset = mem->getAddress("region_z");
-    uint32_t feature1_start_ptr = mem->getAddress("local_feature_start_ptr");
+    OffsetGroup * OG_Maps = mem->getGroup("Maps");
+    OffsetGroup * OG_MapBlock = OG_Maps->getGroup("block");
+    OffsetGroup * OG_LocalFt = OG_Maps->getGroup("features")->getGroup("local");
+    uint32_t designations = OG_MapBlock->getOffset("designation");
+    uint32_t block_feature1 = OG_MapBlock->getOffset("feature_local");
+    uint32_t block_feature2 = OG_MapBlock->getOffset("feature_global");
+    uint32_t region_x_offset = OG_Maps->getAddress("region_x");
+    uint32_t region_y_offset = OG_Maps->getAddress("region_y");
+    uint32_t region_z_offset = OG_Maps->getAddress("region_z");
+    uint32_t feature1_start_ptr = OG_LocalFt->getAddress("start_ptr");
     int32_t regionX, regionY, regionZ;
     
     // read position of the region inside DF world