There's no problem. A "Damaged" layer means that QRecall detected data loss when reassuming the layer. For example, if a data block was bad there may be a missing file. The log should contain the details.
Steven M. Alper wrote:Is there any problem in continuing to use an archive that has had a simple Repair operation run on it, but that now contains an "Unknown - Damaged -" layer?
When the repair is finished the layer and archive are still usable. The "Damaged" warning is displayed as a reminder that the layer should not be treated as a complete record of all the changes originally captured.
If the other changes in that layer aren't important to you, you can delete the layer. If the damaged layer is the very last layer, select it and delete it. If it's not the last layer, merge it with the next layer in the archive. All changes unique the damaged layer will be discard.
To absolutely guarantee that no data is missing and all layers represent a true and complete record of changes, perform a new capture and then merge everything from the damaged layer to the latest capture.