Error on startup, missing a texture.

So I installed BMS yesterday and ran it straight out of the installer, it worked perfectly. No problems at all. I installed it to an external drive (which happens to be the same drive that SDK Base '07 is installed to), which meant that Steam refused to place it on the games list even after a restart. I followed the instructions posted here, and now I’m getting an error message on startup: “Can’t find background image materials/console/startup_loading.vtf” I checked the folder in question and there is indeed no such texture. Is this a built-in texture from the SDK base? If so, could the problem be that I have both BMS and the SDK base installed to an external drive? If not, uhh…help?

Edit:

Never mind, found the solution here.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.