CCS/PROCESSOR-SDK-AM335X: could not write file problem

Part Number:PROCESSOR-SDK-AM335X

Tool/software: Code Composer Studio

Hi,

I am following http://processors.wiki.ti.com/index.php/Processor_SDK_Linux_Training:_Hands_on_with_the_Linux_SDK#Configuring_Remote_System_Explorer_.28RSE.29 and trying to build the executable file and it should be written unto  the target Am335x board automatically. But I keep getting the error show below. I have connected to my target board using SSH  and I have chmod -R 777 to give permissions to both the host pc workspace and the target executable file folder. I have also changed he absolute path in Debug Configurations to /home/root/helloworld. How could I resolve this problem? Thank you.