Pass List crashing Suricata

[genotix]

Hi Guys,

I've been using Suricata for some time now and I'm very happy with the PFSense implementation.
To make sure my backups succeed I wanted to add the IP addresses of Amazon AWS to the Pass List.

After adding these lists it seems like a strange "IP" or "Network" is found in Aliases or some kind of overflow is causing a buggy list.
(See below image)

I've checked upto the level of /cf/conf/config.xml where the networks are defined but am unable to find the "source" of the "" line.
It seems like this sign is causing the issues of crashing.

Any ideas / tips are more than welcome.