I've got the same problem, even with prior versions of Kerbalism until 2.0.0 (wich is not working in KSP 1.7.2). The Near Future GUI doesn't show up in the toolbar and the reactors dont work. As soon as Kerbalism is de-installed everything works fine. Running KSP 1.7.2 including "making history" and "breaking grund". In KSP 1.5.1 it worked well together. Does someone has a solution?
Beside that i appreciate the magnificent work done for this great mod.