diff --git a/CMakeLists.txt b/CMakeLists.txt
index 88df53cf3..b3bde946e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,7 +60,6 @@ SET(LIB ${CMAKE_SOURCE_DIR}/lib)
 SET(BIN ${CMAKE_SOURCE_DIR}/bin)
 SET(MOD ${CMAKE_SOURCE_DIR}/include)
 SET(PY ${CMAKE_SOURCE_DIR}/swiftest)
-#SET(TEST ${CMAKE_SOURCE_DIR}/tests)
 
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIB})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIB})
@@ -73,9 +72,6 @@ SET(CMAKE_Fortran_MODULE_DIRECTORY ${MOD})
 ADD_SUBDIRECTORY(${SRC} ${BIN})
 
 ADD_SUBDIRECTORY(${PY})
-# # Set up test directory
-# ENABLE_TESTING()
-# ADD_SUBDIRECTORY(${TEST})
 
 # Add a distclean target to the Makefile
 ADD_CUSTOM_TARGET(distclean 
diff --git a/pyproject.toml b/pyproject.toml
index b15841821..036396069 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,6 +8,9 @@ requires = [
 ]
 build-backend = "setuptools.build_meta"
 
+[tool.cibuildwheel]
+dependency-versions = "latest"
+
 [tool.cibuildwheel.linux]
 environment = {SKBUILD_CONFIGURE_OPTIONS="-DBUILD_SHARED_LIBS=OFF", FFLAGS="${FFLAGS} -fPIC", CFLAGS="${CFLAGS} -fPIC", LDFLAGS="${LDFLAGS} -fPIE", LIBS="-lgomp"}
 before-all = [
diff --git a/src/base/base_module.f90 b/src/base/base_module.f90
index 8dde5d36f..a056a94b2 100644
--- a/src/base/base_module.f90
+++ b/src/base/base_module.f90
@@ -623,7 +623,7 @@ subroutine base_util_exit(code,unit)
          case default
             write(iu, FAIL_MSG) VERSION
             write(iu, BAR)
-            error stop
+            stop 
          end select
    
          stop
diff --git a/src/misc/lambda_function_module.f90 b/src/misc/lambda_function_module.f90
index 9f7a0ef70..cea7dea29 100644
--- a/src/misc/lambda_function_module.f90
+++ b/src/misc/lambda_function_module.f90
@@ -79,7 +79,7 @@ module lambda_function
    !!          if (allocated(self%lastarg)) deallocate(self%lastarg)
    !!          allocate(self%lastarg, source=x)
    !!       else
-   !!          error stop "Lambda function was not initialized"
+   !!          stop "Lambda function was not initialized"
    !!       end if
    !!    end function lambda_ri_args_eval
    !!
@@ -238,7 +238,7 @@ function lambda_eval_0(self, x) result(y)
             if (allocated(self%lastarg)) deallocate(self%lastarg)
             allocate(self%lastarg, source=x)
          else
-            error stop "Lambda function was not initialized"
+            stop "Lambda function was not initialized"
          end if
       end function lambda_eval_0
 
@@ -255,7 +255,7 @@ function lambda_eval_0_err(self, x) result(y)
             if (allocated(self%lastarg)) deallocate(self%lastarg)
             allocate(self%lastarg, source=x)
          else
-            error stop "Lambda function was not initialized"
+            stop "Lambda function was not initialized"
          end if
       end function lambda_eval_0_err
 
@@ -270,7 +270,7 @@ function lambda_eval_tvar(self, x, t) result(y)
          if (associated(self%lambdaptr_tvar)) then
             y = self%lambdaptr_tvar(x,t)
          else
-            error stop "Lambda function was not initialized"
+            stop "Lambda function was not initialized"
          end if
       end function lambda_eval_tvar
 
diff --git a/src/tides/tides_spin_step.f90 b/src/tides/tides_spin_step.f90
index 40a8f1659..697485ae6 100644
--- a/src/tides/tides_spin_step.f90
+++ b/src/tides/tides_spin_step.f90
@@ -82,7 +82,7 @@ module function tides_derivs_eval(self, x, t) result(y)
       if (associated(self%lambdaptr_tides_deriv)) then
          y = self%lambdaptr_tides_deriv(x, t, self%dt, self%rbeg, self%rend)
       else
-         error stop "Lambda function was not initialized"
+         stop "Lambda function was not initialized"
       end if
 
       return
diff --git a/swiftest/_bindings.pyx b/swiftest/_bindings.pyx
index 8f8265c04..fbc8dab69 100644
--- a/swiftest/_bindings.pyx
+++ b/swiftest/_bindings.pyx
@@ -13,6 +13,10 @@ def driver(integrator, param_file_name, display_style):
         char* c_param_file_name = b_param_file_name 
         char* c_display_style = b_display_style 
 
-    with nogil:
-        bindings_c_driver(c_integrator, c_param_file_name, c_display_style)
+    try:
+        with nogil:
+            bindings_c_driver(c_integrator, c_param_file_name, c_display_style)
+    except:
+        raise Warning("The Swiftest driver did not terminate normally")
+
     return
\ No newline at end of file
diff --git a/swiftest/tests/CMakeLists.txt b/swiftest/tests/CMakeLists.txt
deleted file mode 100644
index 4a7f951f0..000000000
--- a/swiftest/tests/CMakeLists.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-ENABLE_TESTING()
-FIND_PACKAGE(Python COMPONENTS Interpreter REQUIRED)
-
-SET(UNIT_TEST swiftest_test_suite)
-ADD_CUSTOM_TARGET(${UNIT_TEST} ALL)
-ADD_DEPENDENCIES(${UNIT_TEST} ${SWIFTEST_DRIVER})
-
-ADD_TEST(NAME ${UNIT_TEST} COMMAND python ${CMAKE_CURRENT_SOURCE_DIR}/test_input_output.py)
-
-ADD_CUSTOM_COMMAND(
-     TARGET ${UNIT_TEST}
-     COMMENT "Run tests"
-     POST_BUILD 
-     WORKING_DIRECTORY ${TEST}
-     COMMAND ${CMAKE_CTEST_COMMAND}  "${UNIT_TEST}" --output-on-failures
-)
-
diff --git a/swiftest/tests/test_input_output.py b/swiftest/tests/test_input_output.py
index d4ddc7c50..745abc582 100755
--- a/swiftest/tests/test_input_output.py
+++ b/swiftest/tests/test_input_output.py
@@ -60,10 +60,6 @@ def test01_gen_ic(self):
       for f in file_list:
          self.assertTrue(os.path.exists(f))
          
-   def test02_read_ic(self):
-      """
-      Tests that Swiftest is able to read a set of pre-existing initial conditions files and that they contain the correct data
-      """
       print("\ntest_read_ic: Test whether we can read back initial conditions files created by test_gen_ic")
       sim = swiftest.Simulation(read_param=True)
       # Check if all names in Dataset read in from file match the expected list of names
@@ -72,12 +68,21 @@ def test02_read_ic(self):
       # Check to see if all parameter values read in from file match the expected parameters saved when generating the file
       self.assertTrue(all([v == param[k] for k,v in sim.param.items() if k in param]))
      
-   def test03_integrators(self):
+   def test02_integrators(self):
       """
       Tests that Swiftest is able to integrate a collection of massive bodies and test particles with all available integrators
       """ 
       print("\ntest_integrators: Tests that Swiftest is able to integrate a collection of massive bodies and test particles with all available integrators")
-      sim = swiftest.Simulation(read_param=True)
+      sim = swiftest.Simulation()
+      sim.clean()
+
+      # Add the modern planets and the Sun using the JPL Horizons Database.
+      # Add the modern planets and the Sun using the JPL Horizons Database.
+      sim.add_solar_system_body(major_bodies)
+   
+      # Display the run configuration parameters.
+      param = sim.get_parameter(verbose=False)
+      sim.save()
       
       # Add 10 user-defined test particles.
       ntp = 10
@@ -90,18 +95,14 @@ def test03_integrators(self):
       omega_tp    = rng.uniform(0.0, 360.0, ntp)
       capm_tp     = rng.uniform(0.0, 360.0, ntp)
 
-      integrators= ["whm","helio","rmvs","symba"]
+      integrators= ["helio","whm","rmvs","symba"]
       sim.add_body(name=name_tp, a=a_tp, e=e_tp, inc=inc_tp, capom=capom_tp, omega=omega_tp, capm=capm_tp)
-      sim.set_parameter(tstart=0.0, tstop=0.02, dt=0.01, istep_out=1, dump_cadence=0)
-      integrators= ["whm","helio","rmvs","symba"]
+      sim.set_parameter(tstart=0.0, tstop=0.10, dt=0.01, istep_out=1, dump_cadence=0)
       for i in integrators:
-         try:
-            sim.run(integrator=i)
-         except:
-            self.fail(f"Failed with integrator {i}")
+         sim.run(integrator=i)
          
          
-   def test04_conservation(self):
+   def test03_conservation(self):
       """
       Tests that Swiftest conserves mass, energy, and momentum to within acceptable tolerances.
       """