Configuring Phobos from the 1-click installer

[Moses via Digitalmars-d-learn]

After using the 1-click Ubuntu installer, I'm having trouble 
figuring out how to import standard library functions for Phobos. 
I get the message:

Error: module io is in file 'std/std/io.d' which cannot be read
import path[0] = /usr/include/dmd/phobos
import path[1] = /usr/include/dmd/druntime/import

Sorry for such a basic question, but I am new to linux. Do I need 
to modify my path, or is Phobos just not located in the right 
directory?