Try changing Source SDK Base 2013 to the "upcoming -" beta. To do so, right-click on "Source SDK Base 2013" in your Steam tools library and select "Properties". In the properties panel, select "Betas" and then change "NONE - Opt out of all beta programs" to "upcoming -".
Special thanks to a user who recently reported this solution to me. I overlooked the requirement as I must have set it ages ago. I will definitely provide these same instructions for the next release.
If any of you are still experiencing crashes, contact support here.
Special thanks to a user who recently reported this solution to me. I overlooked the requirement as I must have set it ages ago. I will definitely provide these same instructions for the next release.
If any of you are still experiencing crashes, contact support here.