When SVG path contains points which has closure(Z) and directly followed by lineto (L), prince fails to render whole pdf with below error:
prince: internal error: invalid svg command list

Simple example is as below. It is valid SVG and correctly rendered on browsers:

<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<svg width="200px" height="200px" viewBox="0 0 200 200" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg">
<path d="M10,10 L60,10 L60,60 Z L10,60" fill="none" stroke="Black" stroke-width="1"/>
</svg>

Prince version having this problem is as below, 64bit:

..\prince-20150914-windows\bin>prince.exe --version
Prince 20150914
Copyright 2002-2015 YesLogic Pty. Ltd.
Non-commercial License

Older Prince version working fine with this SVG is below, x86:

C:\Program Files (x86)\Prince\engine\bin>prince.exe --version
Prince 10 rev 4
Copyright 2002-2015 YesLogic Pty. Ltd.
Non-commercial License

PS: SVG is attached

1. path.svg‎ 0.3 kB ‎
   Simple SVG path

Thank you, we will fix this issue for the next maintenance release.

This issue has been fixed in Prince 10 rev 5, available now.

Thanks!