I found the way it happens last night. I think you had a file uploaded with a _file_id.diz file in it (note the underscore) and Mystic was
trying to process it for a file description. But it couldn't delete the file afterwards because it only actually deletes the standard filenames (file_id.diz and file_id.ans).
I've changed it last night so that it will only ever import
"file_id.diz" or "file_id.ans" files so the "_" prefixed file will never get processed in future which will correct the problem.
Great news :)
|07E|10m|07b|10a|07l|10m|07e|10d |12-----------------------------------------------------
|09Black Lodge Research BBS |11blacklodgeresearch.org:4022
|11fsx|08Net: |0721:4/166 |11sci|08Net: |0777:1/133
--- Mystic BBS v1.12 A45 2020/02/18 (Linux/64)
* Origin: Black Lodge Research BBS (21:4/166)
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