Error deleting file with version 5.8.2

Trying to delete a file in results in "Error deleting file '<filename>': S_dosFsLib_ILLEGAL_NAME" with the new 5.8.2 (beta).

Navigating the remote directory tree also fails in most but not all cases. The error messages typically look like "Error listing directory /F:/Platform/Web/JQuery: Could not retrieve directory listing S_dosFsLib_ILLEGAL_NAME".

The target FTP server is a B&R PLC, hence the rather odd remote path. But it worked with the previous version of WinSCP.

Please attach a full log file both from 5.8.2 and the "previous version" for a comparison.

Privately attached two two log files, one for 5.7.7 and one for 5.8.2 (portable).

Log extract from 5.7.7 (Build 6257):
Log extract from 5.8.2 beta (Build 6284)

Bug 1400 broke Bug 1074. Re-fixed in WinSCP 5.8.3.
https://winscp.net/tracker/1400
https://winscp.net/tracker/1074

Can you send me an email, so I can send you back a development version of WinSCP for testing? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.