Help on using glide 64...

I dont know why but when i use glide 64 i cant go fullscreen, and i need to go fullscreen for the image to display

by the way, i am using a voodoo 2(i have an old one ) and not the wrapper

I downloaded the newest version of glide 64 and it still happens, i cant go fullscreen using 'esc', 'alt + enter' or clicking on the full screen tab under options.
I even tried clicking that option 'on loading a rom go to full screen' under settings and it doesnt work either
I need to know how to go fullscreen or i can't play my games with this plug in