So basically i'm using Alaris source and client to fiddle around with.

I added a custom home by switching out some of the cache files. Doing this made places like edgeville, varrock, and other locations have no floor or map for them.

Does anyone know the fix or how to fix this issue?

Got the same issue.

is there any errors? in the console?

if not, you've probably corrupted the map files when adding a custom home  

I agree with Divine.. I do have a tool you can try. If your interested shoot me a PM

there is a tool