Unrecoverable error 11: DownloadsV2.db3

[dane]

Good Morning - since recently restoring my windows system from a backup, when I download group headers I get errors that say 'unrecoverable error 11' and detail 'downloadsV2.db3'. I can't tell whether this interferes with the functioning of Newbin or not but there seems to be a portion of the sqlite database missing. Is this a serious problem and how can I correct it?

Thanks,
DaDane