My client is receiving these errors when trying to append a newly scanned page to a document(by opening the document, clicking on the scanning button, and scanning in new pages that way). They receive the error "The specified index is out of range for this collection.".

They have scanned in the individual pages, and added them by dragging them into the document icon and that seems to work, so scanning and appending as separate steps seem to be fine. They have rebooted the computer and repaired LF, but the issue is still there. They have made sure they have the correct permissions(proven by the fact they can do the tasks separately), and it seems to be happening to multiple users on different computers. It is happening in basic and standard modes.

I have uploaded a screenshot of the error and an error log from ProgramData\Laserfiche\Laserfiche Scanning\Errors. They are on 10.2 currently, but tested 9.2.1 and did not receive the error in that version. Has anyone else gotten this error before? Thanks!