Mandeep it is likely that Ginny Liu is receiving the error documented in the Known Issues section of Troubleshoot Adobe Download Assistant - http://helpx.adobe.com/creative-suite/kb/troubleshoot-download-assista nt.html#main_Known_issues. Shnath's solution should resolve the issue as it will allow Ginny to initiate a direct download.
The other option Ginny is to remove your current installation of the Adobe Download Assistant and reinstall. Once ADA is installed successfully you will be able to download the installation files.