diff --git a/linux_install b/linux_install
index ef061b343f..e8fe527693 100755
--- a/linux_install
+++ b/linux_install
@@ -37,11 +37,11 @@ pushd $ROOTDIR
 ROOTDIR=$PWD
 LOGFILE=$ROOTDIR/linux_install.log
 ERRORFILE=$ROOTDIR/linux_install.err
-GCC4ARM_VERSION=gcc-arm-none-eabi-4_7-2012q4
-GCC4ARM_FILENAME=gcc-arm-none-eabi-4_7-2012q4-20121208-linux.tar.bz2
-GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.7/4.7-2012-q4-major/+download/$GCC4ARM_FILENAME
+GCC4ARM_VERSION=gcc-arm-none-eabi-4_8-2014q1
+GCC4ARM_FILENAME=gcc-arm-none-eabi-4_8-2014q1-20140314-linux.tar.bz2
+GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q1-update/+download/$GCC4ARM_FILENAME
 GCC4ARM_TAR=$ROOTDIR/$GCC4ARM_FILENAME
-GCC4ARM_MD5=475c3283253b872bb576020844046cf2
+GCC4ARM_MD5=72b0d06ae16b303c25fd70b2883d3950
 GCC4ARM_EXTRACT=$ROOTDIR/$GCC4ARM_VERSION
 GCC4ARM_DIR=$ROOTDIR/gcc-arm-none-eabi
 GCC4ARM_BINDIR=$GCC4ARM_DIR/bin
diff --git a/mac_install b/mac_install
index 9c123ceba9..e74b6a75ed 100755
--- a/mac_install
+++ b/mac_install
@@ -37,11 +37,11 @@ pushd $ROOTDIR
 ROOTDIR=$PWD
 LOGFILE=$ROOTDIR/mac_install.log
 ERRORFILE=$ROOTDIR/mac_install.err
-GCC4ARM_VERSION=gcc-arm-none-eabi-4_7-2012q4
-GCC4ARM_FILENAME=gcc-arm-none-eabi-4_7-2012q4-20121208-mac.tar.bz2
-GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.7/4.7-2012-q4-major/+download/$GCC4ARM_FILENAME
+GCC4ARM_VERSION=gcc-arm-none-eabi-4_8-2014q1
+GCC4ARM_FILENAME=gcc-arm-none-eabi-4_8-2014q1-20140314-mac.tar.bz2
+GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q1-update/+download/$GCC4ARM_FILENAME
 GCC4ARM_TAR=$ROOTDIR/$GCC4ARM_FILENAME
-GCC4ARM_MD5=fcfe3aecbfe77c1e5985845fbe722aac
+GCC4ARM_MD5=5d34d95a53ba545f1585b9136cbb6805
 GCC4ARM_EXTRACT=$ROOTDIR/$GCC4ARM_VERSION
 GCC4ARM_DIR=$ROOTDIR/gcc-arm-none-eabi
 GCC4ARM_BINDIR=$GCC4ARM_DIR/bin
diff --git a/mri/mri.ar b/mri/mri.ar
index b3a47fe317..6b32dbe6c0 100644
Binary files a/mri/mri.ar and b/mri/mri.ar differ
diff --git a/mri/mri.h b/mri/mri.h
index 3e0c83d050..c93b12391d 100644
--- a/mri/mri.h
+++ b/mri/mri.h
@@ -20,7 +20,9 @@
 #include <stdint.h>
 
 /* Used to insert hardcoded breakpoint into user's code. */
-#define __debugbreak()  do { __asm volatile ("bkpt #0"); } while (0)
+#ifndef __debugbreak
+    #define __debugbreak()  { __asm volatile ("bkpt #0"); }
+#endif
 
 /* Error strings that can be returned to GDB. */
 #define     MRI_ERROR_INVALID_ARGUMENT      "E01"   /* Encountered error when parsing command arguments. */
@@ -91,12 +93,12 @@ int __mriPlatform_CommUartIndex(void);
 
 #ifndef MRI_VERSION_STRING
 
-#define MRI_BRANCH "https://github.com/adamgreen/mri/tree/version_0.5"
+#define MRI_BRANCH "https://github.com/adamgreen/mri/tree/version_0.6"
 
 #define MRI_VERSION_MAJOR       0
-#define MRI_VERSION_MINOR       5
-#define MRI_VERSION_BUILD       20130120
-#define MRI_VERSION_SUBBUILD    1
+#define MRI_VERSION_MINOR       6
+#define MRI_VERSION_BUILD       20140515
+#define MRI_VERSION_SUBBUILD    2
 
 #define MRI_STR(X) MRI_STR2(X)
 #define MRI_STR2(X) #X
diff --git a/src/modules/robot/Conveyor.cpp b/src/modules/robot/Conveyor.cpp
index d1f3ce7ac1..4b6f9e279f 100644
--- a/src/modules/robot/Conveyor.cpp
+++ b/src/modules/robot/Conveyor.cpp
@@ -69,10 +69,9 @@ void Conveyor::on_module_loaded(){
 void Conveyor::on_idle(void* argument){
     if (queue.tail_i != gc_pending)
     {
-        if (queue.is_empty())
+        if (queue.is_empty()) {
             __debugbreak();
-        else
-        {
+        }else{
             // Cleanly delete block
             Block* block = queue.tail_ref();
 //             block->debug();
diff --git a/win_install.cmd b/win_install.cmd
old mode 100755
new mode 100644
index 1e3d0c83a5..6fafcbb847
--- a/win_install.cmd
+++ b/win_install.cmd
@@ -1,5 +1,5 @@
 @echo off
-rem Copyright 2012 Adam Green (http://mbed.org/users/AdamGreen/)
+rem Copyright 2013 Adam Green (http://mbed.org/users/AdamGreen/)
 rem
 rem Licensed under the Apache License, Version 2.0 (the "License");
 rem you may not use this file except in compliance with the License.
@@ -19,26 +19,18 @@ setlocal
 set ROOTDIR=%~dp0
 set LOGFILE=%ROOTDIR%win_install.log
 set ERRORFILE=%ROOTDIR%win_install.err
-
-set GCC4ARM_FILENAME=gcc-arm-none-eabi-4_7-2012q4-20121208-linux.tar.bz2
-set GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.7/4.7-2012-q4-major/+download/%GCC4ARM_FILENAME%
+set GCC4ARM_VERSION=gcc-arm-none-eabi-4_8-2014q1
+set GCC4ARM_FILENAME=gcc-arm-none-eabi-4_8-2014q1-20140314-win32.zip
+set GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q1-update/+download/%GCC4ARM_FILENAME%
 set GCC4ARM_TAR=%ROOTDIR%%GCC4ARM_FILENAME%
-set GCC4ARM_MD5=%ROOTDIR%build\win32\gcc-arm-none-eabi.md5
-set GCC4ARM_VERSION=gcc-arm-none-eabi-4_7-2012q4
-set GCC4ARM_EXTRACT=%ROOTDIR%%GCC4ARM_VERSION%
+set GCC4ARM_MD5=09c19b3248863074f5498a88f31bee16
+set GCC4ARM_MD5_FILENAME=%ROOTDIR%gcc-arm-none-eabi.md5
 set GCC4ARM_DIR=%ROOTDIR%gcc-arm-none-eabi
 set GCC4ARM_BINDIR=%GCC4ARM_DIR%\bin
-set GCC4ARM_LIBEXEC=%GCC4ARM_DIR%\lib\gcc\arm-none-eabi\4.7.3
-set WINBIN_URL=https://github.com/adamgreen/GCC-ARM-Embedded-20121208/tarball/master
-set WINBIN_TAR=%ROOTDIR%GCC-ARM-Embedded-20121208.tar.gz
-
-set WINBIN_MD5=%ROOTDIR%build\win32\GCC-ARM-Embedded.md5
-set WINBIN_BASEDIR=%ROOTDIR%GCC-ARM-Embedded
-set WINBIN_DIR=%WINBIN_BASEDIR%\win32
-set OUR_MAKE=%ROOTDIR%build\win32\make.exe
+set OUR_MAKE=%ROOTDIR%external\win32\make.exe
 set BUILDENV_CMD=%GCC4ARM_BINDIR%\buildenv.cmd
 set BUILDSHELL_CMD=%ROOTDIR%BuildShell.cmd
-set ERROR_ENCOUNTERED=0
+set BUILDSHELL_DEBUG_CMD=%ROOTDIR%BuildShellDebug.cmd
 
 
 rem Make sure that we are running with current directory set to where this
@@ -50,67 +42,56 @@ echo Logging install results to %LOGFILE%
 echo %DATE% %TIME%  Starting %0 %*>%LOGFILE%
 
 echo Downloading GNU Tools for ARM Embedded Processors...
-echo %DATE% %TIME%  Executing build\win32\curl -kL0 %GCC4ARM_URL%>>%LOGFILE%
-build\win32\curl -kL0 %GCC4ARM_URL% >%GCC4ARM_TAR%
-if errorlevel 1 goto ExitOnError
-
-echo Validating md5 signature of Code Sourcery G++ Lite...
-call :RunAndLog build\win32\md5sum --check %GCC4ARM_MD5%
-if errorlevel 1 goto ExitOnError
-
-echo Downloading Windows GCC binaries from github...
-echo %DATE% %TIME%  Executing build\win32\curl -kL0 %WINBIN_URL%>>%LOGFILE%
-build\win32\curl -kL0 %WINBIN_URL% >%WINBIN_TAR%
+echo %DATE% %TIME%  Executing external\win32\curl -kL0 %GCC4ARM_URL%>>%LOGFILE%
+external\win32\curl -kL0 %GCC4ARM_URL% >%GCC4ARM_TAR%
 if errorlevel 1 goto ExitOnError
 
-echo Validating md5 signature of Windows GCC binaries...
-call :RunAndLog build\win32\md5sum --check %WINBIN_MD5%
+echo Validating md5 signature of GNU Tools for ARM Embedded Processors...
+echo %GCC4ARM_MD5% *%GCC4ARM_FILENAME%>%GCC4ARM_MD5_FILENAME%
+call :RunAndLog external\win32\md5sum --check %GCC4ARM_MD5_FILENAME%
 if errorlevel 1 goto ExitOnError
+del "%GCC4ARM_MD5_FILENAME%"
 
 echo Extracting GNU Tools for ARM Embedded Processors...
-call :RunAndLog rd /s /q %GCC4ARM_EXTRACT%
 call :RunAndLog rd /s /q %GCC4ARM_DIR%
-call :RunAndLog build\win32\bsdtar xf %GCC4ARM_TAR%
-if errorlevel 1 goto ExitOnError
-call :RunAndLog move %GCC4ARM_EXTRACT% %GCC4ARM_DIR%
-if errorlevel 1 goto ExitOnError
-
-echo Extracting Windows GCC binaries...
-call :RunAndLog rd /s /q %WINBIN_BASEDIR%
-call :RunAndLog build\win32\bsdtar xf %WINBIN_TAR%
-for /d %%i in (adamgreen-GCC-ARM-Embedded-*) do call :RunAndLog move %%i %WINBIN_BASEDIR%
-if errorlevel 1 goto ExitOnError
-
-echo Installing Windows binaries...
-call :RunAndLog del /q %GCC4ARM_BINDIR%\*
-call :RunAndLog copy %WINBIN_DIR%\arm-none-eabi-* %GCC4ARM_BINDIR%\
+call :RunAndLog md %GCC4ARM_DIR%
 if errorlevel 1 goto ExitOnError
-for %%i in (as g++ ld objcopy ranlib ar c++ gcc nm objdump strip) do call :CopyGccFile %%i
-if "%ERROR_ENCOUNTERED%"=="1" goto ExitOnError
-call :RunAndLog xcopy /eiy %WINBIN_DIR%\libexec %GCC4ARM_LIBEXEC%
+call :RunAndLog cd %GCC4ARM_DIR%
+call :RunAndLog ..\external\win32\bsdtar xf %GCC4ARM_TAR%
 if errorlevel 1 goto ExitOnError
+call :RunAndLog cd ..
 
 echo Creating helper scripts...
 echo @echo off>%BUILDENV_CMD%
 echo REM Uncomment next line and set destination drive to match mbed device>>%BUILDENV_CMD%
 echo REM SET LPC_DEPLOY=copy PROJECT.bin f:\>>%BUILDENV_CMD%
 echo.>>%BUILDENV_CMD%
-echo SET PATH=%%~dp0;%%~dp0..\..\build\win32;%%PATH%%>>%BUILDENV_CMD%
+echo SET PATH=%%~dp0;%%~dp0..\..\external\win32;%%PATH%%>>%BUILDENV_CMD%
 rem
 echo @cmd.exe /K %%~dp0\gcc-arm-none-eabi\bin\buildenv.cmd>%BUILDSHELL_CMD%
+rem
+echo @cmd.exe /K "set GCC4MBED_TYPE=Debug& %%~dp0\gcc-arm-none-eabi\bin\buildenv.cmd">%BUILDSHELL_DEBUG_CMD%
+
+rem Place GNU Tool for ARM Embedded Processors in the path before building gcc4mbed code.
+set path=%GCC4ARM_BINDIR%;%ROOTDIR%external\win32;%PATH%
+
+echo Performing a clean build of the gcc4mbed samples...
+call :RunAndLog %OUR_MAKE% clean
+if errorlevel 1 goto ExitOnError
+call :RunAndLog %OUR_MAKE%
+if errorlevel 1 goto ExitOnError
 
 echo Cleaning up intermediate files...
-call :RunAndLog rd /s /q %WINBIN_BASEDIR%
-call :RunAndLog del /f %WINBIN_TAR%
 call :RunAndLog del /f %GCC4ARM_TAR%
 
 echo **************************************************************************
-echo To build Smoothie, you will first need to run the following batch
+echo To build gcc4mbed samples, you will first need to run the following batch
 echo file so that your environment variables are set correctly:
 echo  %BUILDSHELL_CMD%
 echo You will want to run this each time you start a new Command Prompt.  You
 echo can simply double-click on this batch file from Explorer to launch a
-echo Command Prompt that has been properly initialized for building.
+echo Command Prompt that has been properly initialized for building gcc4mbed
+echo based code.
 echo **************************************************************************
 
 rem Restore current directory and exit batch file on success.
@@ -128,17 +109,9 @@ goto :EOF
 
 
 
-rem Copies a file between GCC directories where one has arm-none-eabi prefix and the other doesn't
-:CopyGccFile
-call :RunAndLog del "%GCC4ARM_DIR%\arm-none-eabi\bin\%1"
-call :RunAndLog copy /y "%GCC4ARM_BINDIR%\arm-none-eabi-%1.exe" "%GCC4ARM_DIR%\arm-none-eabi\bin\%1.exe"
-if errorlevel 1 set ERROR_ENCOUNTERED=1
-goto :EOF
-
-
 rem Exits the batch file due to error.
-rem Make sure that any stderr text ends up in win_install.log and the restore
-rem the current dictory before forcing an early exit.
+rem Make sure that any stderr text ends up in win_install.log and then restore
+rem the current directory before forcing an early exit.
 :ExitOnError
 type %ERRORFILE% >>%LOGFILE%
 echo %DATE% %TIME%  Failure forced early exit>>%LOGFILE%
@@ -148,4 +121,4 @@ type %LOGFILE%
 :Exit
 del %ERRORFILE%
 popd
-pause
\ No newline at end of file
+pause