WinSCP 5.21 Crashing when trying to download multiple files simultaneously

WinSCP 5.21 crashes after I start a multi-file background download. I can pull a single file at a time and it runs fine. When I try to download more than one file, it starts to download the second and then crashes. I completely uninstalled WinSCP and reinstalled and the behavior is the same. I ended up having to revert back to 5.17 to get a successful multi-file download. I have attached a 5.17 log (successful) and 5.21 log (failure). I didn't start the log for 5.21 until I was about to attempt the multi-file background download. The last message in the log was what was output before the crash.

Same here.

Same Here

Same problem

Thanks for your reports. Unfortunately, I cannot reproduce the problem.

@Mike555: I'm sending an email with a debug version of WinSCP to the address you have used to register on this forum.

@CraigS, @nthang989, @PatrickB: Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include a link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.

I was able to reproduce the problem in the end. It happens with FTP only:
Issue 2093 – Failure when starting parallel FTP background transfers

But still, please contact me for testing.

When will the update be?

Hello,

I have this reoccurring issue that has rendered me unable to use the program. Every time I am uploading / downloading multiple files it randomly close with no crash messages. I used to use this program daily but sadly I have had to use other programs.

IF anyone has a fix or a debug please let me know!

Same here as well

WinSCP 5.21.1 with the fix has been released just now.

I appreciate any feedback.