Doesn't work when hexedit plugin is installed

[unphased]

I get these errors:

Error detected while processing function AfterimageReadPost:
line   34:
E484: Can't open file /var/folders/z_/ybb_x1f96l9d2yqr18ncmg1w0000gn/T/vNZcU6S/6

And it just shows a blank file

whenever this is installed

I'm actually not really using the hexmode because it doesn't actually seem user friendly. So that makes this an uber low priority sort of bug. However, this bug is definitely really confusing.

[fanmanpro]

I'm getting exactly the same error except I'm on Windows so the path is just different:

Error detected while processing function AfterimageReadPost:
line   34:
E484: Can't open file C:\Users\<username>\AppData\Local\BIV1342.tmp

I don't have hexmode installed but I do have ImageMagick.

EDIT:
After further testing, I see that GVim runs the plugin perfectly. The issue is with ConEmu on Windows.