WoW Version
Retail 11.0.2

AddOn skin name
Skinner Viewport?

Describe the bug
As soon as I turn on viewport and attempt to resize, my entire computer freezes up and crashes. Also, the action bars aren't letting skin the buttons. I check it but it immediately unchecks it on reload.

Hi,

I'm unable to reproduce the Viewport crash you reported, it is working fine for me.
If it keeps happening can you provide me with a copy of your Skinner SV file please.

As for the ActionBars, these are disabled in Retail as they were causing too many ADDON_ACTION_BLOCKED/ADDON_ACTION_FORBIDDEN errors.
I have removed the option to change the setting, in Retail, as it is redundant.
I suggest you use a Button AddOn such as Bartender4 or Dominos (other AddOns are available).