Strange error when svn update --set-depth

Hello!

I am using the command line client of the latest 1.8 tortoise SVN on windows 7 to change the depth
of a working copy. The subdirectory ACS64-A8 contains only an svn:external.

Extending depth to include that said external works flawlessly.

But when I remove it, I get two warnings and an error (Zugriff verweigert is Access denied):

D:\PRJ\RDA\Main\Images>svn update --set-depth empty ACS64-A8
Updating 'ACS64-A8':
Removed external 'ACS64-A8\images': Can't check path 'D:\PRJ\RDA\Main\Images\ACS64-A8\images\.svn': Zugriff verweigert
svn: warning: W200000: Error handling externals definition for 'ACS64-A8\images':
svn: warning: W720005: Can't check path 'D:\PRJ\RDA\Main\Images\ACS64-A8\images\.svn': Zugriff verweigert
Updated to revision 3872.
svn: E205011: Failure occurred processing one or more externals definitions

but strange enough: the directory images is gone.

So I get an error for an action that looks like it succeeded finally.

Could the virus scanner delay a delete action, so that svn *thinks* it didn't work?

(svn, version 1.8.14 (r1692801) compiled Aug 2 2015, 17:48:46 on x86-microsoft-windows)

Mit freundlichen Grüßen
Dr. Hartmut Niemann

Siemens AG
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Received on 2015-08-24 18:13:00 CEST