Cannot create npc entities

[Delirious]

Whenever i try to create an npc_ entity, hammer crashes. Im using the beta sdk fyi.

update-I can load some entities such as the stalker but not vorts, alyx, and others.

 

[UltraProAnti]

try one of the following:

* run hl2 the game, then try the sdk
* restart steam, then try

i've found the sdk seems to update every time i load it lately. works in the end though