diff --git a/Logo-Editor.md b/Logo-Editor.md
index 2b061fa..5c7a0ea 100644
--- a/Logo-Editor.md
+++ b/Logo-Editor.md
@@ -27,6 +27,17 @@ Further information is discussed in issue [41](https://github.com/Ralim/ts100/is
 ### Mac
 
 The logo editor should run under mono on Mac, similar to Linux.
+It does however need to be started in 32 bit mode : 
+`mono --arch=32 TS100.Logo.Editor.exe`
+
+I have Python 2.7.10 and had to install `pil`(actually Pillow, inspired by [this post](https://stackoverflow.com/a/20061019/6705343) on Stack Exchange):
+
+` sudo pip install Pillow`
+
+Then running the python file:
+
+`./img2ts100.py infile.png outfile.hex`
+
 
 ### Using the software