I recently loaded the GFX pack and it works well in the slow game. In the speed game, there are two images that don't show up: 1 the grass image on the build map, and 2 the "1" image for building level.
These images show up in slow, just not in speed.
I set the path to the GFX path a second time, updated my profile, logged out, and logged in again. But this didn't fix it.
-Dave
No-Knots (speed)
One-Stroke (slow)