fix bug to correctly detect nonexistant downloads directory
fix bug to correctly detect nonexistant downloads directory

nikken1/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor