SSIS and Script Component - WebReference problem

Within my SSIS package-dataflow I have a script component and within this component whenever I add a Web reference and close editor, script component gives me > "Validation error. Data Flow Task Script Component : The binary code for the script is not found. Please open the script in the designer by clicking Edit Script button and make sure it builds successfully." I can successfully build from the editor, but error resides there. How can I solve this problem. Ps: I am using SSDT for VS2012.