B0b1

It's got 4 cores allocated (and 6GB RAM). Host has 8 cores HT (and 32GB RAM). The issue hasn't re-occurred since I went back to .13.

I'm not using any antivirus on the VM - I virus-check any downloads on my host first and if clean then....oh wait, yeah, it's got Windows Defender on it. Forgot about that. I could snapshot it in this working state and retest the upgrade with Defender turned off...just a bit reluctant now that I'm up and running again. Give me some time, I just need to make some progress with current projects and then I'll do the above and come back to you with the result.

Hi and thank you for providing paint.net, I'm a regular user. I read that the forum is one of the places you can post a bug report, and thought it might be useful if others are having a similar issue, and to see if it's just me or not. I read the guidelines and searched in there for info on an appropriate place in the forums to put a bug report, but couldn't find anything, so hopefully it's ok here. Please move it it's not right - I'm completely new here. So, the bug: I just upgraded to 10.0.17 and suddenly I could not save as .png anymore - it causes Paint.net to crash and also totally locks up my VM (I run paint.net on a VM). I tried with a new file, copied two layers from the original pdn into the new file, then tried save as .png from there and the same thing happened. I downgraded to 10.0.13 (uninstalled .17 and re-installed .13) and still got the same problem. (At this stage I would have just reverted to a snapshot of my VM, but found I had not taken one recently enough ) The following worked: 1) uninstall paint.net 2) scrub the registry of anything containing PaintDotNet 3) reboot 4) re-install paint.net (10.0.13) Now, *relief*, I can save as .png again. It seems there may be a registry setting with 10.0.17 which is causing the problem. Is anyone else having this or a similar issue? eg., saving as to other formats in 10.0.17?