diff --git a/bootstrap/coriolisEnv.py b/bootstrap/coriolisEnv.py
index e359cf8d..0a3c8502 100755
--- a/bootstrap/coriolisEnv.py
+++ b/bootstrap/coriolisEnv.py
@@ -147,7 +147,7 @@ def guessShell ():
    #if os.environ.has_key('SHELL'): return os.environ['SHELL']
 
     psCommand     = subprocess.Popen ( ['ps', '-p', str(os.getppid()) ], stdout=subprocess.PIPE )
-    shell         = psCommand.stdout.readlines()[1][:-1].split()[-1].lstrip('-')
+    shell         = psCommand.stdout.readlines()[1][:-1].split()[3].lstrip('-')
     whichCommand  = subprocess.Popen ( ['which', shell ], stdout=subprocess.PIPE )
     shellPath     = whichCommand.stdout.readlines()[0][:-1]
 
@@ -273,9 +273,10 @@ if __name__ == "__main__":
        or osType.startswith("Linux.sl") \
        or osType.startswith("Linux.el") \
        or osType.startswith("Linux.fc") \
-       or osType.startswith("Darwin")   \
        or osType.startswith("Cygwin"):
       sitePackagesDir = "%s/python%s/site-packages" % (absLibDir,version)
+    elif  osType.startswith("Darwin"):
+      sitePackagesDir = "%s/%s/site-packages" % (absLibDir,version)
     else:
       sitePackagesDir = "%s/python%s/dist-packages" % (absLibDir,version)
 
diff --git a/katana/src/katana/RoutingEvent.h b/katana/src/katana/RoutingEvent.h
index 2367bca9..b79f39d9 100644
--- a/katana/src/katana/RoutingEvent.h
+++ b/katana/src/katana/RoutingEvent.h
@@ -124,7 +124,7 @@ namespace Katana {
       inline  const vector<TrackElement*>& getPerpandiculars     () const;
       inline  DbU::Unit                    getAxisHint           () const;
       inline  DbU::Unit                    getAxisHistory        () const;
-      inline  long                         getAxisWeight         ( DbU::Unit ) const;
+      inline  DbU::Unit                    getAxisWeight         ( DbU::Unit ) const;
       inline  const Interval&              getConstraints        () const;
       inline  const Interval&              getOptimal            () const;
       inline  const Interval&              getPerpandicularFree  () const;
@@ -218,7 +218,7 @@ namespace Katana {
 //inline const vector<TrackElement*>&  RoutingEvent::getPerpandiculars       () const { return _perpandiculars; }
   inline DbU::Unit                     RoutingEvent::getAxisHistory          () const { return _axisHistory; }
   inline DbU::Unit                     RoutingEvent::getAxisHint             () const { return _axisHint; }
-  inline long                          RoutingEvent::getAxisWeight           ( DbU::Unit axis ) const { return abs(axis - getAxisHint()); }
+  inline DbU::Unit                     RoutingEvent::getAxisWeight           ( DbU::Unit axis ) const { return abs(axis - getAxisHint()); }
   inline const Interval&               RoutingEvent::getConstraints          () const { return _constraints; }
   inline const Interval&               RoutingEvent::getOptimal              () const { return _optimal; }
   inline const Interval&               RoutingEvent::getPerpandicularFree    () const { return _dataNegociate->getPerpandicularFree(); }
diff --git a/katana/src/katana/TrackCost.h b/katana/src/katana/TrackCost.h
index 95d95336..32245001 100644
--- a/katana/src/katana/TrackCost.h
+++ b/katana/src/katana/TrackCost.h
@@ -119,7 +119,7 @@ namespace Katana {
       inline       DbU::Unit     getDelta           () const;
       inline       DbU::Unit     getDeltaPerpand    () const;
       inline       DbU::Unit     getLongestOverlap  () const;
-      inline       long          getAxisWeight      () const;
+      inline       DbU::Unit     getAxisWeight      () const;
       inline       int           getRipupCount      () const;
       inline       uint32_t      getDataState       () const;
       inline       uint32_t      setFlags           ( uint32_t );
@@ -203,7 +203,7 @@ namespace Katana {
   inline       uint32_t      TrackCost::getTerminals       () const { return _terminals; }
   inline       DbU::Unit     TrackCost::getLongestOverlap  () const { return _longuestOverlap; }
   inline       DbU::Unit     TrackCost::getDelta           () const { return _delta; }
-  inline       long          TrackCost::getAxisWeight      () const { return _axisWeight; }
+  inline       DbU::Unit     TrackCost::getAxisWeight      () const { return _axisWeight; }
   inline       int           TrackCost::getRipupCount      () const { return _ripupCount; }
   inline       uint32_t      TrackCost::getDataState       () const { return _dataState; }
   inline       uint32_t      TrackCost::setFlags           ( uint32_t mask ) { _flags |= mask; return _flags; }