SetupArrayProps R: array prop 'null' is at index zero
From Valve Developer Community
The only Source 2007 game left today is Source SDK Base 2007. To use it:
- Change the
SteamAppIdvalue in gameinfo.txt to
218, then restart Steam.
- Make sure that any paths to hl2.exe (such as the launch path for the Visual Studio debugger) are pointing to
SteamApps/account_name/source sdk base 2007/hl2.exe.
- If the SDK launcher lists any Source 2007 games, reset it for each engine version to prevent future confusion.
- Use the SDK launcher's "Edit Game Configurations" tool to move your mod's SDK profile to Source 2007.
Tip:To access content from a 2009 game while still using the 2007 engine, see mounting multiple games.