That fails on 3 different computers with 3 different OLEX2 versions. But the error is related to the basis set file, not MY file.
Except I'm on Windows. I love Linux subsystem for Windows. I can compile and stuff like a real programmer without using Cygwin, which never worked right.
Of course, the compile instructions are a bit unclear, but I think I have it working. Running the test suite now. Failed test 69, but passed the rest (so far).