Netware 4.11 fails to mount volume, reports "Invalid deleted file"

[ATC]

When attempting to mount a volume, the server reports "Invalid deleted file", proceeds with vrepair without finding any problems, then attempts to mount again with the same error:

XENA:mount files3
Mounting Volume FILES3
**  Reading In FAT
**  Verifying Directory FAT Chain
**  Validating the Extended Directory
**  Scanning the Directory
**  Checking Subdirectories
**  Scanning Files with Trustee Nodes
**  Scanning Deleted Files
SERVER-4.11-433: Invalid deleted file.
  Auto-loading module VREPAIR.NLM
  NetWare 4.11 Volume Repair Utility
  Version 4.21    22 July 1997
  (c) Copyright 1989-1997, Novell, Inc.  All rights reserved.
Mounting Volume FILES3
**  Reading In FAT
**  Verifying Directory FAT Chain
**  Validating the Extended Directory
**  Scanning the Directory
**  Checking Subdirectories
**  Scanning Files with Trustee Nodes
**  Scanning Deleted Files
SERVER-4.11-433: Invalid deleted file.
XENA:

[ATC]

Start vrepair manually and enable the VRepair option to purge all deleted files. Then perform a new check on the volume. Finally, you should be able to mount the volume as usual.

Warning: This method will permanently purge all files currently marked as deleted, making it impossible to salvage them. Also, VRepair will report an unusual amount of errors (5-6 digits) while scanning the free space, this is normal.