I too, can no longer use the Filter Gallery and the Liquify filter. When I call up Liquify this is what I see. 
The tools menu on the left are not visible. On the right side the sliders are visible but the names of these sliders is not visible.
When I load the same image in the Filter Gallery this is what I see.

The image is an 8 bit RGB file.
My hardware is a 2 year old MacBook Pro which should not have any problem crunching this data.

Is it possible that I may need to delete Photoshop and reinstall? Any assistance will be appreciated.