diff --git a/cmake_support/OST.cmake b/cmake_support/OST.cmake
index e15d869255e17d6fa0b875296cc2e6c998a46fc2..297696f4ce0d1468309feed082bc96c68f0fa302 100644
--- a/cmake_support/OST.cmake
+++ b/cmake_support/OST.cmake
@@ -215,7 +215,7 @@ macro(module)
     endif()
     if (APPLE)
       set_target_properties(${_LIB_NAME} PROPERTIES
-                            LINK_FLAGS "-Wl,-rpath,@loader_path"
+                            LINK_FLAGS "-Wl,-rpath,@@loader_path"
                             INSTALL_NAME_DIR "@rpath")
     endif()
     if (WIN32)
@@ -332,7 +332,7 @@ macro(executable_libexec)
                        "${LIBEXEC_STAGE_PATH}")  
   if (APPLE AND NOT _ARG_NO_RPATH AND NOT _ARG_STATIC)
     set_target_properties(${_ARG_NAME} PROPERTIES
-                          LINK_FLAGS "-Wl,-rpath,@loader_path/../../lib")
+                          LINK_FLAGS "-Wl,-rpath,@loader_path/../lib")
   endif()
   if (_ARG_LINK)
     target_link_libraries(${_ARG_NAME} ${_ARG_LINK})
diff --git a/deployment/macos/deps.py b/deployment/macos/deps.py
index 34654a25ee0a0e6af30fd50870bb4a179bf6a608..627d73ef764773d2bc904f2fdc422a7737bf208b 100644
--- a/deployment/macos/deps.py
+++ b/deployment/macos/deps.py
@@ -26,8 +26,8 @@ def _deps_for_lib(lib, pool, recursive=True):
         pool.add(d)        
   return
 
-def collect_deps(stage_dir, components, binaries, libexec_binaries,
-                 site_packages, site_packages_dir):
+def collect_deps(stage_dir, components, binaries, site_packages, 
+                 site_packages_dir):
   """
   Collect the dependencies for the given components and returns a list of 
   frameworks/libraries that the component depends on.
@@ -49,14 +49,6 @@ def collect_deps(stage_dir, components, binaries, libexec_binaries,
       continue
     if bin_name not in pool:
       _deps_for_lib(bin_name, pool)
-  for bin in libexec_binaries:
-    bin_name=os.path.abspath(os.path.join(stage_dir, 'libexec/openstructure',
-                                          bin))
-    if not os.path.exists(bin_name):
-      print 'WARNING:', bin_name, 'does not exist'
-      continue
-    if bin_name not in pool:
-      _deps_for_lib(bin_name, pool)
   for site_package in site_packages:
     full_path=get_python_module_path(site_package)
     print full_path
@@ -68,15 +60,12 @@ def collect_deps(stage_dir, components, binaries, libexec_binaries,
         _deps_for_lib(so_file, pool)
   return pool
 
-BINARIES=['chemdict_tool']
-LIBEXEC_BINARIES=['gosty']
+BINARIES=['gosty', 'chemdict_tool']
 COMPONENTS=['mol', 'geom', 'conop', 'gfx', 'gui', 'seq_alg', 'seq', 
             'img', 'img_alg', 'info', 'io', 'db', 'base']
 SCRIPTS=['dng', 'ost']
-LIBEXEC_SCRIPTS=['ost_config']
-
 CHANGE_ID_RPATH='install_name_tool -id @rpath/%s %s'   
-CHANGE_ID='install_name_tool -id @rpath/%s %s'
+CHANGE_ID='install_name_tool -id @executable_path/%s %s'   
 CHANGE_LOAD_CMD_RPATH='install_name_tool -change %s @rpath/%s %s'
 CHANGE_LOAD_CMD='install_name_tool -change %s @executable_path/%s %s'
 ADD_RPATH='install_name_tool -add_rpath %s %s 2> /dev/null'
@@ -85,24 +74,25 @@ REMOVE_HEADERS='rm -rf `find %s/lib -type d -name Headers`'
 REMOVE_CURRENT='rm -rf `find %s/lib -type d -name Current`'
 # collect libs of non-standard libraries/frameworks we depend on
 
-def copy_binaries(stage_dir, outdir, binary_names, scripts, bin_dir,
+def copy_binaries(stage_dir, outdir, binary_names, scripts, use_rpath, 
                   append_bin=True):
 
-  exe_path=os.path.abspath(os.path.join(outdir, bin_dir))
+  exe_path=os.path.abspath(os.path.join(outdir, 'bin'))
   for binary_name in binary_names:
     if append_bin:
-      bin_name=os.path.join(stage_dir, bin_dir, binary_name)
+      bin_name=os.path.join(stage_dir, 'bin', binary_name)
     else:
       bin_name=os.path.join(stage_dir, binary_name)
     if not os.path.exists(bin_name):
       print 'WARNING:', binary_name, 'does not exist'
       continue
-    dst_name=os.path.join(outdir, bin_dir, os.path.basename(bin_name))
+    dst_name=os.path.join(outdir, 'bin', os.path.basename(bin_name))
     shutil.copy(bin_name, dst_name)
-    update_load_commands(dst_name, True, exe_path)
+    update_load_commands(dst_name, True, use_rpath, exe_path)
+    os.system(ADD_RPATH % ('../lib', dst_name))
   for script in scripts:
-    shutil.copy(os.path.join(stage_dir, bin_dir, script),
-                os.path.join(outdir,bin_dir, script))
+    shutil.copy(os.path.join(stage_dir, 'bin', script), 
+                os.path.join(outdir,'bin', script))
 
 def split_framework_components(abs_path):
     """
@@ -118,31 +108,46 @@ def split_framework_components(abs_path):
         trail=os.path.join(*parts[i+1:])
         return lead, trail
 
-def change_id(id, lib):
+def change_id(id, lib, use_rpath):
   os.chmod(lib, 0666)
-  os.system(CHANGE_ID_RPATH % (id,lib))
+  if use_rpath:
+    os.system(CHANGE_ID_RPATH % (id,lib))
+  else:
+    os.system(CHANGE_ID % (id,lib))
   os.chmod(lib, 0444)
 
-def update_load_commands(lib, exe, exe_path):
+def update_load_commands(lib, exe, use_rpath, exe_path):
   direct_deps=set()
   _deps_for_lib(lib, direct_deps, recursive=False)
   os.chmod(lib, 0666)
   for direct_dep in direct_deps:
     if direct_dep.endswith('.dylib'):
-      new_name=os.path.basename(direct_dep)
-      os.system(CHANGE_LOAD_CMD_RPATH % (direct_dep, new_name, lib))
+      if use_rpath:
+        new_name=os.path.basename(direct_dep)
+        os.system(CHANGE_LOAD_CMD_RPATH % (direct_dep, new_name, lib))
+      else:
+        new_name=os.path.join('../lib', os.path.basename(direct_dep))
+        os.system(CHANGE_LOAD_CMD % (direct_dep, new_name, lib))
     else:
       assert direct_dep.find('.framework/')>=0
-      framework_path, rel_path=split_framework_components(direct_dep)
-      framework_name=os.path.basename(framework_path)
-      new_name=os.path.join(framework_name, rel_path)
-      os.system(CHANGE_LOAD_CMD_RPATH % (direct_dep, new_name, lib))
+      if use_rpath:
+        framework_path, rel_path=split_framework_components(direct_dep)
+        framework_name=os.path.basename(framework_path)
+        new_name=os.path.join(framework_name, rel_path)
+        os.system(CHANGE_LOAD_CMD_RPATH % (direct_dep, new_name, lib))
+      else:
+        framework_path, rel_path=split_framework_components(direct_dep)
+        framework_name=os.path.basename(framework_path)      
+        new_name=os.path.join('../lib', framework_name, rel_path)
+        os.system(CHANGE_LOAD_CMD % (direct_dep, new_name, lib))
+  if use_rpath:
+    os.system(ADD_RPATH % ('.', lib))
   if exe:
     os.chmod(lib, 0555)
   else:
     os.chmod(lib, 0444)
 
-def copy_deps(dependencies, outdir):
+def copy_deps(dependencies, outdir, use_rpath):
   exe_path=os.path.join(outdir, 'bin')
   for dep in dependencies:
     if dep.endswith('.dylib'):
@@ -150,21 +155,29 @@ def copy_deps(dependencies, outdir):
       if not os.path.exists(dep):
         continue
       shutil.copy(dep, dst_name)
-      change_id(os.path.basename(dep), dst_name)
-      update_load_commands(dst_name, False, exe_path)
+      if use_rpath:
+        change_id(os.path.basename(dep), dst_name, use_rpath)
+      else:
+        change_id('../lib/%s' % os.path.basename(dep), dst_name, use_rpath)
+      update_load_commands(dst_name, False, use_rpath, exe_path)
     else:
       assert dep.find('.framework/')>=0
       framework_path, rel_path=split_framework_components(dep)
       framework_name=os.path.basename(framework_path)
       dst_name=os.path.join(outdir, 'lib', framework_name)
       shutil.copytree(framework_path, dst_name)
-      change_id(os.path.join(dst_name, rel_path),
-                os.path.join(dst_name, rel_path))
+      if use_rpath:
+        change_id(os.path.join(dst_name, rel_path), 
+                  os.path.join(dst_name, rel_path), use_rpath)
+      else:
+        change_id(os.path.join('../lib', framework_name, rel_path), 
+                  os.path.join(dst_name, rel_path), use_rpath)
       os.unlink(os.path.join(dst_name, os.path.splitext(framework_name)[0]))
       update_load_commands(os.path.join(dst_name, rel_path), False, 
-                           exe_path)
+                           use_rpath, exe_path)
 
-def update_pymod_shared_objects(lib_path, path, files):
+def update_pymod_shared_objects(args, path, files):
+  lib_path, use_rpath=args
   exe_path=os.path.abspath(os.path.join(lib_path, '../bin'))
   for f in files:
     if not os.path.exists(os.path.join(path, f)):
@@ -174,7 +187,7 @@ def update_pymod_shared_objects(lib_path, path, files):
       path_to_lib_path=os.path.relpath(lib_path, path)
       abs_name=os.path.join(path, f)
       os.system(ADD_RPATH % (path_to_lib_path, abs_name))
-      update_load_commands(abs_name, False, exe_path)
+      update_load_commands(abs_name, False, use_rpath, exe_path)
     elif ext in ('.pyc', '.pyo'):
       os.unlink(os.path.join(path, f))
 
@@ -204,30 +217,43 @@ def get_python_home():
   """
   return os.path.dirname(sys.modules['os'].__file__)
 
+def check_install_name_tool_capabilities():
+  """
+  Find out whether install_name_tool supports the add_rpath option.
+  """
+  inst_name_tool=subprocess.Popen('install_name_tool', shell=True, 
+                                  stderr=subprocess.PIPE)
+  output=inst_name_tool.communicate()[1]
+  return output.find('-add_rpath')!=-1
+
 def make_standalone(stage_dir, outdir, no_includes, force_no_rpath=False,
                     macports_workaround=False):
   site_packages=get_site_package_dir()                    
+  # figure out if install_name_tool supports the -add_rpath option.
+  use_rpath=True
+  if not check_install_name_tool_capabilities():
+    print "install_name_tool doesn't support the -add_rpath option."
+    print "I will fallback to the more arcane @executable_path"
+    use_rpath=False
+  elif force_no_rpath:
+    print "I will use the arcane @executable_path"
+    use_rpath=False
 
   if os.path.exists(outdir):
     shutil.rmtree(outdir)
   os.system('mkdir -p "%s"' % outdir)
   os.system('mkdir -p "%s/lib"' % outdir)
   os.system('mkdir -p "%s/bin"' % outdir)
-  os.system('mkdir -p "%s/libexec/openstructure"' % outdir)
   print 'copying shared datafiles'
   shutil.copytree(os.path.join(stage_dir, 'share'), 
                   os.path.join(outdir, 'share'))
   print 'collecting dependencies'
-  deps=collect_deps(stage_dir, COMPONENTS, BINARIES, LIBEXEC_BINARIES,
-                    SITE_PACKAGES,
+  deps=collect_deps(stage_dir, COMPONENTS, BINARIES, SITE_PACKAGES, 
                     site_packages)
   print 'copying dependencies'
-  copy_deps(deps, outdir)
+  copy_deps(deps, outdir, use_rpath)
   print 'copying binaries'
-  copy_binaries(stage_dir, outdir, BINARIES, SCRIPTS, 'bin')
-  print 'copying libexec binaries'
-  copy_binaries(stage_dir, outdir, LIBEXEC_BINARIES, LIBEXEC_SCRIPTS,
-                'libexec/openstructure')
+  copy_binaries(stage_dir, outdir, BINARIES, SCRIPTS, use_rpath)
   print 'copying pymod'
   shutil.copytree(os.path.join(stage_dir, 'lib/openstructure'), 
                   os.path.join(outdir, 'lib/openstructure'))
@@ -249,7 +275,7 @@ def make_standalone(stage_dir, outdir, no_includes, force_no_rpath=False,
       if os.path.exists(os.path.join(modules_dst, 'site-packages')):
         shutil.rmtree(os.path.join(modules_dst, 'site-packages'))
       copy_binaries(os.path.join(python_home, '../..'), outdir, 
-                    ['python'], [], 'bin')
+                    ['python'], [], use_rpath)
       python_bin=os.path.abspath(os.path.join(python_home, '../../bin/python'))
     else:
       # For MacPorts it's even more involved. Python is not executed directly 
@@ -259,11 +285,11 @@ def make_standalone(stage_dir, outdir, no_includes, force_no_rpath=False,
         path_to_app='../../Resources/Python.app/Contents/MacOS/'
         exe_path=os.path.join(python_home, path_to_app)
         copy_binaries(exe_path, outdir, ['python'], [], 
-                      append_bin=False)
+                      use_rpath, append_bin=False)
         python_bin=os.path.join('/opt/local/bin/python')
       else:
         copy_binaries(os.path.join(python_home, '../..'), outdir, 
-                      ['python'], [])
+                      ['python'], [], use_rpath)
         python_bin=os.path.abspath(os.path.join(python_home, '../../bin/python'))
       # remove all versions but the one we are using
       version_string=sys.version[0:3]
@@ -282,6 +308,9 @@ def make_standalone(stage_dir, outdir, no_includes, force_no_rpath=False,
     script=script.replace(python_bin, '$BIN_DIR/python')
     open(ost_script, 'w').write(script)
     os.chmod(ost_script, 0555)
+  elif use_rpath==False:
+    print 'BIG FAT WARNING: Creating bundle with @executable_path and default'
+    print 'Python might not work. Test carefully before deploying.'
 
   if no_includes:
     os.system(REMOVE_HEADERS % outdir)
@@ -296,4 +325,4 @@ def make_standalone(stage_dir, outdir, no_includes, force_no_rpath=False,
   print 'updating link commands of python shared objects'
   os.path.walk(os.path.join(outdir, 'lib'), 
                update_pymod_shared_objects, 
-               os.path.join(outdir, 'lib'))
+               (os.path.join(outdir, 'lib'), use_rpath))