grid size is zero

[pakair]

Steps to reproduce

1. started oregano 0.84.13
2. Edit | Preferences
3. grid size is zero, + or - don't change the number

Expected behaviour

I should be able to set grid size to px points

Actual behaviour

see step 3

Configuration

ubuntu mate 16.04.03

cat /etc/os-release |grep PRETTY_NAME
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

Versions
oregano --version
0.84.13
ngspice --version
don't have that

[gtrentalancia]

Changing the grid size is not recommended I suppose, as the parts won't be aligned properly otherwise.

Consider the grid is never printed out when you print the schematic, so it is just an aid for drawing it.