fix

Author: oscardssmith

lib/OrdinaryDiffEqRosenbrock/src/rosenbrock_perform_step.jl

@@ -308,7 +308,7 @@ end
 
         if mass_matrix !== I
             invatol = inv(integrator.opts.abstol)
-            atmp = ifelse(!integrator.differential_vars, integrator.fsallast, false) .* invatol
+            atmp = ifelse(integrator.differential_vars, false, integrator.fsallast) .* invatol
             integrator.EEst += integrator.opts.internalnorm(atmp, t)
         end
     end
@@ -384,7 +384,7 @@ end
 
         if mass_matrix !== I
             invatol = inv(integrator.opts.abstol)
-            atmp = ifelse(!integrator.differential_vars, integrator.fsallast, false) .* invatol
+            atmp = ifelse(integrator.differential_vars, false, integrator.fsallast) .* invatol
             integrator.EEst += integrator.opts.internalnorm(atmp, t)
         end
     end