diff --git a/src/bitmessagemain.py b/src/bitmessagemain.py
index 1b7dc6ff..e93fbd46 100644
--- a/src/bitmessagemain.py
+++ b/src/bitmessagemain.py
@@ -35,6 +35,13 @@ from class_addressGenerator import *
 import helper_startup
 import helper_bootstrap
 
+import sys
+if sys.platform == 'darwin':
+    if float( "{1}.{2}".format(*sys.version_info) ) < 7.5:
+        print "You should use python 2.7.5 or greater."
+        print "Your version: {0}.{1}.{2}".format(*sys.version_info)
+        sys.exit(0)
+
 def connectToStream(streamNumber):
     selfInitiatedConnections[streamNumber] = {}
     if sys.platform[0:3] == 'win':
diff --git a/src/bitmessageqt/__init__.py b/src/bitmessageqt/__init__.py
index ac554d92..ae5ab8a7 100644
--- a/src/bitmessageqt/__init__.py
+++ b/src/bitmessageqt/__init__.py
@@ -2954,8 +2954,11 @@ def run():
     app = QtGui.QApplication(sys.argv)
     translator = QtCore.QTranslator()
 
-    translator.load("translations/bitmessage_" + str(locale.getlocale()[0]))
-    #translator.load("translations/bitmessage_fr_BE") # Try French instead
+    try:
+        translator.load("translations/bitmessage_" + str(locale.getlocale()[0]))
+    except:
+        # The above is not compatible with all versions of OSX.
+        translator.load("translations/bitmessage_en_US") # Default to english.
 
     QtGui.QApplication.installTranslator(translator)
     app.setStyleSheet("QStatusBar::item { border: 0px solid black }")
diff --git a/src/pyelliptic/openssl.py b/src/pyelliptic/openssl.py
index 09df5ca4..ee75f90a 100644
--- a/src/pyelliptic/openssl.py
+++ b/src/pyelliptic/openssl.py
@@ -289,7 +289,12 @@ class _OpenSSL:
         self.HMAC.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int,
                               ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p]
 
-        self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC
+        try:
+            self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC
+        except:
+            # The above is not compatible with all versions of OSX.
+            self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC_SHA1
+            
         self.PKCS5_PBKDF2_HMAC.restype = ctypes.c_int
         self.PKCS5_PBKDF2_HMAC.argtypes = [ctypes.c_void_p, ctypes.c_int,
                                            ctypes.c_void_p, ctypes.c_int,