diff --git a/src/db.cpp b/src/db.cpp
index 93c4573fa0..f1caeff3f5 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -41,7 +41,7 @@ void CDBEnv::EnvShutdown()
     if (ret != 0)
         printf("EnvShutdown exception: %s (%d)\n", DbEnv::strerror(ret), ret);
     if (!fMockDb)
-        DbEnv(0).remove(strPath.c_str(), 0);
+        DbEnv((u_int32_t)0).remove(strPath.c_str(), 0);
 }
 
 CDBEnv::CDBEnv() : dbenv(DB_CXX_NO_EXCEPTIONS)
diff --git a/src/init.cpp b/src/init.cpp
index c1c8e4964e..7856a6ef32 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -515,6 +515,7 @@ bool AppInit2()
 
     uiInterface.InitMessage(_("Verifying database integrity..."));
 
+    LOCK(bitdb.cs_db);
     if (!bitdb.Open(GetDataDir()))
     {
         string msg = strprintf(_("Error initializing database environment %s!"
@@ -917,7 +918,7 @@ std::string LicenseInfo(bool f1, bool f2)
         strprintf(_("Please contribute if you find %s useful. Visit %s for further information about the software. "), PACKAGE_NAME,URL_WEBSITE.c_str()) +
         "\n\n" + 
         strprintf(_("Source code: %s"), URL_SOURCE_CODE.c_str()) + "\n" + 
-        strprintf(_("Dowloand wallet: %s"), "<http://m-core.org/bin>") + "\n" + 
+        strprintf(_("Download wallet: %s"), "<http://m-core.org/bin>") + "\n" +
         strprintf(_("Block-Chain: %s"), "<http://m-core.org/bin/block-chain>") + "\n" + 
         strprintf(_("Roadmap: %s"), "<http://m-core.org/resources/roadmap>") + "\n" + 
         "\n" + 
diff --git a/src/makefile.osx b/src/makefile.osx
index 3776d01288..0b7eb2ec0a 100644
--- a/src/makefile.osx
+++ b/src/makefile.osx
@@ -5,8 +5,13 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 CXX=llvm-g++
+
+# macports
 #DEPSDIR=/opt/local
 
+#homebrew
+DEPSDIR=/usr/local/Cellar
+
 # :=0 --> UPnP support turned off by default at runtime
 # :=1 --> UPnP support turned on by default at runtime
 # :=- --> No UPnP support - miniupnp not required
@@ -20,33 +25,43 @@ INCLUDEPATHS= \
  -I"$(CURDIR)" \
  -I"$(CURDIR)"/obj \
  -I"$(DEPSDIR)/include" \
- -I"$(DEPSDIR)/include/db48"
+ -I"$(DEPSDIR)/berkeley-db@4/4.8.30/include" \
+ -I"$(DEPSDIR)/openssl/1.0.2o_2/include"
 
 LIBPATHS= \
- -L"$(DEPSDIR)/lib" \
- -L"$(DEPSDIR)/lib/db48"
+ -L"$(DEPSDIR)" \
+ -L"$(DEPSDIR)/berkeley-db@4/4.8.30/lib" \
+ -L"$(DEPSDIR)/leveldb/1.20_2/lib"
 
 LIBS = -dead_strip
 
 TESTDEFS = -DTEST_DATA_DIR=$(abspath test/data)
-BOOST_LIB_SUFFIX=-mt-s
 
-ifdef STATIC
+# was mt-s (doesn't exist in macport install today)
+BOOST_LIB_SUFFIX=-mt
+
+#ifdef STATIC
 # Build STATIC if you are redistributing the binary
 #DEPSDIR=/opt/crypt
-TESTLIBS += \
- $(DEPSDIR)/lib/libboost_unit_test_framework-mt.a
-LIBS += \
- $(DEPSDIR)/lib/libdb_cxx-4.8.a \
- $(DEPSDIR)/lib/libboost_system$(BOOST_LIB_SUFFIX).a \
- $(DEPSDIR)/lib/libboost_filesystem$(BOOST_LIB_SUFFIX).a \
- $(DEPSDIR)/lib/libboost_program_options$(BOOST_LIB_SUFFIX).a \
- $(DEPSDIR)/lib/libboost_thread$(BOOST_LIB_SUFFIX).a \
- $(DEPSDIR)/lib/libssl.a \
- $(DEPSDIR)/lib/libgmp.a \
- $(DEPSDIR)/lib/libcrypto.a \
- -lz
-else
+
+# NOTE: File library (.a) does not exist
+#TESTLIBS += \
+# $(DEPSDIR)/lib/libboost_unit_test_framework-mt.a
+
+#LIBS += \
+# $(DEPSDIR)/lib/libdb_cxx-4.8.a \
+# $(DEPSDIR)/lib/libboost_system$(BOOST_LIB_SUFFIX).a \
+# $(DEPSDIR)/lib/libboost_filesystem$(BOOST_LIB_SUFFIX).a \
+# $(DEPSDIR)/lib/libboost_program_options$(BOOST_LIB_SUFFIX).a \
+# $(DEPSDIR)/lib/libboost_thread$(BOOST_LIB_SUFFIX).a \
+# $(DEPSDIR)/lib/libssl.a \
+# $(DEPSDIR)/lib/libgmp.a \
+# $(DEPSDIR)/lib/libcrypto.a \
+# -lz \
+# -lssl \
+# -lcrypto \
+# -lgmp
+#else
 TESTLIBS += \
  -lboost_unit_test_framework$(BOOST_LIB_SUFFIX)
 LIBS += \
@@ -60,7 +75,7 @@ LIBS += \
  -lcrypto \
  -lz
 TESTDEFS += -DBOOST_TEST_DYN_LINK
-endif
+#endif
 
 DEFS=-DMAC_OSX -DMSG_NOSIGNAL=0 -DBOOST_SPIRIT_THREADSAFE
 
diff --git a/src/serialize.h b/src/serialize.h
index 3b3dcd4fcb..74ee9059a2 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -811,6 +811,7 @@ class CDataStream
     iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
     void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
 
+/*
     void insert(iterator it, const_iterator first, const_iterator last)
     {
         assert(last - first >= 0);
@@ -823,6 +824,7 @@ class CDataStream
         else
             vch.insert(it, first, last);
     }
+*/
 
     void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
     {