diff --git a/System/Vacuum/OpenGL/Client.hs b/System/Vacuum/OpenGL/Client.hs
--- a/System/Vacuum/OpenGL/Client.hs
+++ b/System/Vacuum/OpenGL/Client.hs
@@ -5,7 +5,7 @@
 -- Usage example:
 --
 -- > $ vacuum-opengl-server &
--- > vaacum-opengl server started - press ESC to exit. 
+-- > vacuum-opengl server started - press ESC to exit. 
 -- > listening on port 55961
 -- > 
 -- > $ ghci
@@ -24,6 +24,12 @@
 --  * the image generated by graphviz may be bigger than the maximum texture 
 --    size your video card supports (eg. 2048). In this case you will see
 --    a white rectangle. TODO: handle this better.
+--
+-- TODO:
+-- 
+--   * zooming & panning with mouse
+--
+--   * nicer graph labels
 --
 
 module System.Vacuum.OpenGL.Client 
diff --git a/System/Vacuum/OpenGL/Server.hs b/System/Vacuum/OpenGL/Server.hs
--- a/System/Vacuum/OpenGL/Server.hs
+++ b/System/Vacuum/OpenGL/Server.hs
@@ -1,7 +1,7 @@
 
 -- | The vacuum-opengl server. This compiles to the executable
 -- \"vacuum-opengl-server\", which you need to start to be able
--- to use the 
+-- to use the client library.
 --
 
 module System.Vacuum.OpenGL.Server where
@@ -27,6 +27,7 @@
 import System.Directory
 import System.Environment
 import System.Exit
+import System.FilePath
 
 import System.IO
 import System.IO.Unsafe
@@ -34,6 +35,7 @@
 import Network
 
 import Foreign
+import Foreign.C
 
 --------------------------------------------------------------------------------
 
@@ -50,6 +52,11 @@
 
 --------------------------------------------------------------------------------
 
+gl_max_texture_size :: CInt       
+gl_max_texture_size = 0xd33    -- OpenGL does not export this...
+
+--------------------------------------------------------------------------------
+
 showPort :: PortID -> String
 showPort p = case p of
   PortNumber n -> show n
@@ -100,8 +107,8 @@
 convertToPNG :: String -> IO Image
 convertToPNG input = do
   tmp <- getTemporaryDirectory
-  let dot = tmp ++ "vacuum-opengl-temp.dot"
-      png = tmp ++ "vacuum-opengl-temp.png"
+  let dot = tmp </> "vacuum-opengl-temp.dot"
+      png = tmp </> "vacuum-opengl-temp.png"
   writeFile dot input
  
 --  print dot
@@ -167,7 +174,9 @@
 -}
 
       eimg <- if b then return img else extendImage img
-      tex <- makeSimpleBitmapTexture eimg
+      simg <- return eimg -- will be a "scaled image" when i write it 
+      
+      tex <- makeSimpleBitmapTexture simg
       
       putMVar theTexture $ Just (tex, bitmapSize img)
   
diff --git a/vacuum-opengl.cabal b/vacuum-opengl.cabal
--- a/vacuum-opengl.cabal
+++ b/vacuum-opengl.cabal
@@ -1,5 +1,5 @@
 Name:                vacuum-opengl
-Version:             0.0.2
+Version:             0.0.3
 Synopsis:            Visualize live Haskell data structures using vacuum, graphviz and OpenGL.
 Description:         Visualize live Haskell data structures using vacuum, graphviz and OpenGL.
                      Intended as an easier-to-build alternative (no large dependency chain)
@@ -21,14 +21,15 @@
 
 Executable vacuum-opengl-server
   if flag(base4)
-    Build-Depends:        base >= 4 && < 5, directory, process, network
+    Build-Depends:        base >= 4 && < 5, directory, process, network, filepath
     cpp-options:          -DBASE_MAJOR_VERSION=4
   else
-    Build-Depends:        base >= 3 && < 4, directory, process, network
+    Build-Depends:        base >= 3 && < 4, directory, process, network, filepath
     cpp-options:          -DBASE_MAJOR_VERSION=3
 
   Build-Depends:       stb-image >= 0.2 && < 0.3,
-                       bitmap < 0.1, bitmap-opengl < 0.1,
+                       bitmap        >= 0.0.1 && < 0.1, 
+                       bitmap-opengl >= 0.0.0 && < 0.1,
                        OpenGL >= 2.2, GLUT >= 2.1
     
   Main-is:             ServerMain.hs