After installing the latest release I too saw the following in all of the entries that were in the middle of the download:

Name: (ok)
Size: (ok)
Status: Disk Error
Progress: 100%
Speed: (blank)
Time: (blank)

Those that were waiting for a busy host were still showing ok.

I also noticed that the CPU cycles were really cranked up, where closing the window and trying to do any other work was a real chore.

Finally, I reinstalled the Pro version and it said that it was unable to automatically restart any of the other processes, and all of the quened entries from before were all blank and the DOWNLOADS.DAT as well as the DOWNLOADS.BAK files was reinitialized.