Perl v5.18.2
And a new system running ImageMagick 6.8.9-9 Q16 x86_64 2017-07-15
Perl v5.20.2
On the new system, one set of images doesn’t convert correctly (fax to png) with the perl libs. The main image is just a black rectangle in a white border.
If I cmdline “convert file.fax file.png” it’s fine (with the exception of rotation etc. which weren’t specified).
I’m assuming it’s a perl issue (I’ve always found it a bit flaky anyway

Has anyone got any ideas on how to fix this?
Thanks.