diff --git a/cmake/FindSimModSuite.cmake b/cmake/FindSimModSuite.cmake
index 5c87e6726..87bc8bccf 100644
--- a/cmake/FindSimModSuite.cmake
+++ b/cmake/FindSimModSuite.cmake
@@ -84,7 +84,7 @@ string(REGEX REPLACE
   "${SIM_VERSION}")
 
 set(MIN_VALID_SIM_VERSION 16.0.210606)
-set(MAX_VALID_SIM_VERSION 17.0.220403)
+set(MAX_VALID_SIM_VERSION 2023.1-231028)
 if( ${SKIP_SIMMETRIX_VERSION_CHECK} )
   message(STATUS "Skipping Simmetrix SimModSuite version check."
     " This may result in undefined behavior")
@@ -113,7 +113,7 @@ message(STATUS "SIM_ARCHOS ${SIM_ARCHOS}")
 option(SIM_PARASOLID "Use Parasolid through Simmetrix" OFF)
 if (SIM_PARASOLID)
   set(MIN_SIM_PARASOLID_VERSION 290)
-  set(MAX_SIM_PARASOLID_VERSION 330)
+  set(MAX_SIM_PARASOLID_VERSION 360)
   foreach(version RANGE
       ${MAX_SIM_PARASOLID_VERSION}
       ${MIN_SIM_PARASOLID_VERSION} -10)
diff --git a/src/mixed_writeMesh.cpp b/src/mixed_writeMesh.cpp
index 8d326f55c..511bac86a 100644
--- a/src/mixed_writeMesh.cpp
+++ b/src/mixed_writeMesh.cpp
@@ -1,18 +1,26 @@
 #include "MeshSim.h"
 #include "SimDiscrete.h"
 #include "SimMessages.h"
-#include "SimError.h"
-#include "SimErrorCodes.h"
-#include "SimMeshingErrorCodes.h"
-#include "SimDiscreteErrorCodes.h"
 #include <iostream>
 using namespace std;
 
 #include "Omega_h_comm.hpp"
 #include "Omega_h_mesh.hpp"
 #include "Omega_h_file.hpp"
+#include "Omega_h_simConfig.h"
 using namespace Omega_h;
 
+#if SIMMODSUITE_MAJOR_VERSION >= 18 && SIMMODSUITE_MINOR_VERSION >= 220930
+  #include "SimInfo.h"
+  #include "SimInfoCodes.h"
+  #define SIM_ERROR(suffix,err) SimInfo_##suffix(err)
+  typedef pSimInfo pSimError;
+#else
+  #include "SimError.h"
+  #include "SimErrorCodes.h"
+  #define SIM_ERROR(suffix,err) SimError_##suffix(err)
+#endif
+
 void messageHandler(int type, const char *msg)
 {
   switch (type) {
@@ -104,9 +112,9 @@ void hex_gen(CommPtr comm, std::string const mesh_dir) {
                    vReturn, eReturn, mesh_path.c_str(), model_path.c_str());
   } catch (pSimError err) {
     cerr<<"SimModSuite error caught:"<<endl;
-    cerr<<"  Error code: "<<SimError_code(err)<<endl;
-    cerr<<"  Error string: "<<SimError_toString(err)<<endl;
-    SimError_delete(err);
+    cerr<<"  Error code: "<<SIM_ERROR(code,err)<<endl;
+    cerr<<"  Error string: "<<SIM_ERROR(toString,err)<<endl;
+    SIM_ERROR(delete,err);
   } catch (...) {
     cerr<<"Unhandled exception caught"<<endl;
   }
@@ -134,9 +142,9 @@ void wedge_gen(CommPtr comm, std::string const mesh_dir) {
                    vReturn, eReturn, mesh_path.c_str(), model_path.c_str());
   } catch (pSimError err) {
     cerr<<"SimModSuite error caught:"<<endl;
-    cerr<<"  Error code: "<<SimError_code(err)<<endl;
-    cerr<<"  Error string: "<<SimError_toString(err)<<endl;
-    SimError_delete(err);
+    cerr<<"  Error code: "<<SIM_ERROR(code,err)<<endl;
+    cerr<<"  Error string: "<<SIM_ERROR(toString,err)<<endl;
+    SIM_ERROR(delete,err);
   } catch (...) {
     cerr<<"Unhandled exception caught"<<endl;
   }
@@ -164,9 +172,9 @@ void pyramid_gen(CommPtr comm, std::string const mesh_dir) {
                    vReturn, eReturn, mesh_path.c_str(), model_path.c_str());
   } catch (pSimError err) {
     cerr<<"SimModSuite error caught:"<<endl;
-    cerr<<"  Error code: "<<SimError_code(err)<<endl;
-    cerr<<"  Error string: "<<SimError_toString(err)<<endl;
-    SimError_delete(err);
+    cerr<<"  Error code: "<<SIM_ERROR(code,err)<<endl;
+    cerr<<"  Error string: "<<SIM_ERROR(toString,err)<<endl;
+    SIM_ERROR(delete,err);
   } catch (...) {
     cerr<<"Unhandled exception caught"<<endl;
   }
@@ -195,9 +203,9 @@ void tetOnWedge_gen(CommPtr comm, std::string const mesh_dir) {
                    vReturn, eReturn, mesh_path.c_str(), model_path.c_str());
   } catch (pSimError err) {
     cerr<<"SimModSuite error caught:"<<endl;
-    cerr<<"  Error code: "<<SimError_code(err)<<endl;
-    cerr<<"  Error string: "<<SimError_toString(err)<<endl;
-    SimError_delete(err);
+    cerr<<"  Error code: "<<SIM_ERROR(code,err)<<endl;
+    cerr<<"  Error string: "<<SIM_ERROR(toString,err)<<endl;
+    SIM_ERROR(delete,err);
   } catch (...) {
     cerr<<"Unhandled exception caught"<<endl;
   }
@@ -229,9 +237,9 @@ void pymOnHex_gen(CommPtr comm, std::string const mesh_dir) {
                    vReturn, eReturn, mesh_path.c_str(), model_path.c_str());
   } catch (pSimError err) {
     cerr<<"SimModSuite error caught:"<<endl;
-    cerr<<"  Error code: "<<SimError_code(err)<<endl;
-    cerr<<"  Error string: "<<SimError_toString(err)<<endl;
-    SimError_delete(err);
+    cerr<<"  Error code: "<<SIM_ERROR(code,err)<<endl;
+    cerr<<"  Error string: "<<SIM_ERROR(toString,err)<<endl;
+    SIM_ERROR(delete,err);
   } catch (...) {
     cerr<<"Unhandled exception caught"<<endl;
   }
@@ -266,9 +274,9 @@ void allType_gen(CommPtr comm, std::string const mesh_dir) {
                    vReturn, eReturn, mesh_path.c_str(), model_path.c_str());
   } catch (pSimError err) {
     cerr<<"SimModSuite error caught:"<<endl;
-    cerr<<"  Error code: "<<SimError_code(err)<<endl;
-    cerr<<"  Error string: "<<SimError_toString(err)<<endl;
-    SimError_delete(err);
+    cerr<<"  Error code: "<<SIM_ERROR(code,err)<<endl;
+    cerr<<"  Error string: "<<SIM_ERROR(toString,err)<<endl;
+    SIM_ERROR(delete,err);
   } catch (...) {
     cerr<<"Unhandled exception caught"<<endl;
   }