Scan stuck at 0% and 1 second

Webroot identified something malicious in a download, so I clicked yes when it asked if I wanted it to remove the file. It did not remove the file but remained in "queue." I could not cancel the process or exit, so I ended the process in my task manager. Now I've been trying to do a scan for about an hour, it says a scan is in process, and it is "scanning for rootkits," but it is not going past 0% and says that only one second has elapsed.