Icon borders are being displayed with the wrong color. I believe this is because the referenced border texture no longer exists.
Lines 424, 475, 526 and 579 reference "Interface\\Addons\\Grid\\white16x16" which no longer exists.
Changing this reference to [[Interface\Buttons\WHITE8X8]] solved the problem for me.
edgeFile = [[Interface\Buttons\WHITE8X8]], edgeSize = 2,
Hope this is useful.