Font not found in the system (some icons)
Hi. recently I install sketch (version 46) and the plugin as the guide says but note that some icons work well and others do not.

NOTE: I had all the tff installed on my MAC but I reinstalled them with the bundle since I do not remember if they are from an old version.


The particular case of the Simple-Line-Icon fire icon, where when I inspect it, this appears:

![captura de pantalla 2018-04-25 a las 10 56 22 a m](https://user-images.githubusercontent.com/8037394/39250733-e720734e-4877-11e8-99d7-f8bf962c2bf3.png)


If I do the following steps I see it:

1- Plugins> icon font> grid insert> Simple Font Line> write fire> select

2- I select the icon in the layer

3- Plugins> icon font> All insert> write fire> select

4- Appears


MAC: OS X El Capitan 10.11.6
Sketch 46.2
Plugin 4.6.0