Adding -staticproplighting breaks compile

[compact nebula]

I have a prop where I want it to generate a lightmap for. So adding -staticproplighting to the parameters to achieve that. But that breaks the hammer++ compiler and it doesnt start with vrad.

Have I got a setting wrong somewhere?

[tawny otter]

post the full log but newer custom compilers have -staticproplighting already enabled and setting it again breaks the compile