mobile

I'm having a problem trying to download files from the Internet. I keep getting an error saying not enough space but I have 7GB free. I try on internal & SD card. I can download apps from the playstore though. I got some error a week ago about corrupt file or something so i flashed stock rom from wicked x but still a problem. It's a rooted galaxy s3 running stock 4.4.2 &ND8. Any ideas,thanks.