My map worked fine, but then I tried installing Harry Bo21's Perk Machines, and then this error started to come up.

Couldn't find the bsp for this map. Please build the fast file associated with maps/train_master_central.d3dbsp and try again.

I've tried compiling it every why I know how, but nothing works.

It is also worth noting that I am very new to the mapping scene, and I could have overlooked something.

Help? 

Hey everyone! My name is MrMcKonz, and I hope to become a great asset to this community!

Hey everyone! I'm fairly new to the modding and mapping scene, and would like to practice by adding UGX perks like flopper, staminup, tombstone, who's who, vulture aid, and electric cherry to Der Riese!

Does anybody have the project files I can use for radiant?