Gmod Crashing when loading up new game

for the past few days since the last Gmod update, the game has been constantly crashing on me when loading up both singleplayer and multiplayer

as soon as the game fully loads the map, it immediately exits to desktop, and I receive the “hl2 has stopped working” prompt about 7 or so seconds later

I’m not sure whats causing it, and has only been happening since it was last updated

If you know anything about why this is happening, or how to fix it, it’d be much appreciated

after playing map , type in console ‘vgui_allowhtml 0’ . It works to everyone who has that problem ^^