RTC 6.0: Source Code is not being loaded from RTC workspace to build forge work space

I have integrated RTC with build forge. And i am able to create simple build by using build forge to execute a simple command from Build forge to the system build forge is installed. But when i am trying to create build from RTC workspace/stream then build forge is not able to load the source code into Build forge workspace/directory. There are the steps for more information :

I have configured RTC and Build Forge.

1. I have created build engine and build definition in RTC.
2. In build forge I have created environment with four variables ( Repository_Address,Build_User, Build_Password, Build_Engine_Path)

I have created project with the environment and with two steps.

Step1 has command .source JazzJBE.

Step2 has command

cd ${team_scm_fetchDestination}/Addition

g++ main.cpp -o main

3. under Jazz source control tab in build definition. I have selected proper workspace for build workspace

4. under load option I have specified the path to load BF workspace.

when I request for build. It fails and found my BF workspace as blank.

I am geeing this error in log file:

Unable to set working directory to 'D:\BuildForgebuildDeepali\HelloBSWProject\BUILD_20\HelloBSWProject\BUILD_20' (2).

Can somebody help me on this.Thanks in advance.