i just got the urge to play again but i have issue running diablo 2 and plugy on 1.13c i have no problem running plugy on 1.14d i even tried d2se with an older diablo version from a youtube videos and the game boot and crash or take age to load the portal loading screen and there is white symbol appearing like alphabet letter on the top left corner of the screen.

is there a way to downgrade to 1.13c without using an older d2 version

I dont have an answer to your question but just curious why you wanna play 1.13c

well apparently it is a better version and it is supposed to run better than the newer patch that is what i read on a bunch of post from different site.