wenever i play toribash my fps goes between 30-40 but my cpu crashes how do i fix this

Post the contents of the sderr file (it's in your toribash folder)

failed to load texture data/textures//menu
Extensions for bump mapping unsupported
curl error 6 'http://forum.toribash.com/toribash/userfiles.php?username=cbk' 'custom.tmp'
curl error 6 'https://content.toribash.com/cp/items.php?username=cbk' 'custom/cbk/item.dat'