diff --git a/OpenSn_Logo_CAD/opensn.lua b/OpenSn_Logo_CAD/opensn.lua
index 99a02d7..9ada8a8 100644
--- a/OpenSn_Logo_CAD/opensn.lua
+++ b/OpenSn_Logo_CAD/opensn.lua
@@ -22,9 +22,9 @@ src_strength[1] = 100.0
 src = lbs.VolumetricSource.Create({ block_ids = {0}, group_strength = src_strength })
 
 -- Quadrature
-Npolar = 4
-Nazimuthal = 4
-pquad = aquad.CreateGLCProductQuadrature3DXYZ(Nazimuthal, Npolar)
+Npolar = 8
+Nazimuthal = 16
+pquad = aquad.CreateGLCProductQuadrature3DXYZ(Npolar, Nazimuthal)
 
 -- Set up solver
 lbs_block = {
@@ -51,9 +51,9 @@ lbs_options = {
   volumetric_sources = { src },
 }
 
-phys = lbs.DiscreteOrdinatesSolver.Create(lbs_block)
+phys = lbs.DiscreteOrdinatesProblem.Create(lbs_block)
 phys:SetOptions(lbs_options)
-ss_solver = lbs.SteadyStateSolver.Create({ lbs_solver = phys })
+ss_solver = lbs.SteadyStateSolver.Create({ lbs_problem = phys })
 
 -- Solve
 ss_solver:Initialize()
diff --git a/OpenSn_Logo_CAD/opensn.py b/OpenSn_Logo_CAD/opensn.py
index 74cff28..6b887ab 100644
--- a/OpenSn_Logo_CAD/opensn.py
+++ b/OpenSn_Logo_CAD/opensn.py
@@ -17,7 +17,7 @@
     from pyopensn.xs import MultiGroupXS, CreateSimpleOneGroup
     from pyopensn.source import VolumetricSource
     from pyopensn.aquad import GLCProductQuadrature3DXYZ
-    from pyopensn.solver import DiscreteOrdinatesSolver, SteadyStateSolver
+    from pyopensn.solver import DiscreteOrdinatesProblem, SteadyStateSolver
     from pyopensn.fieldfunc import FieldFunctionGridBased
 
 if __name__ == "__main__":
@@ -44,7 +44,7 @@
     pquad = GLCProductQuadrature3DXYZ(Npolar, Nazimuthal)
 
     # Solver
-    phys = DiscreteOrdinatesSolver(
+    phys = DiscreteOrdinatesProblem(
         mesh=grid,
         num_groups=Ng,
         groupsets=[
@@ -66,7 +66,7 @@
             "volumetric_sources": [src],
         }
     )
-    ss_solver = SteadyStateSolver(lbs_solver=phys)
+    ss_solver = SteadyStateSolver(lbs_problem=phys)
     ss_solver.Initialize()
     ss_solver.Execute()