Video Expander .FRAG refresh problem

[Professor.suspect]

As soon as I use an overlay shader (the ones marked with a V), the screen freezes and doesn’t refresh. The shader is still running, but the NerdSeq itself is frozen. I noticed this while trying to move the cursor around or change menus!    
The overlay shaders are actually my favorites! )

.FRAG V:

  V Gear.FRAG (Size: 973 bytes / Downloads: 2)