diff --git a/.CI/installLibraries.mos b/.CI/installLibraries.mos
index 0028b32..96ed2ed 100644
--- a/.CI/installLibraries.mos
+++ b/.CI/installLibraries.mos
@@ -77,6 +77,7 @@ for l in {
   {"Modelica_Synchronous", "master"},
   {"ModelicaByExample", "master"},
   {"ModelicaTestOverdetermined", "master"},
+  {"NeuralNetwork", "main"},
   {"ObjectStab", "master"},
   {"OpenHydraulics", "main"},
   {"OpenIMDML", "main"},
diff --git a/README.md b/README.md
index b44d461..9e2bd67 100644
--- a/README.md
+++ b/README.md
@@ -187,10 +187,10 @@ defining `MSLREFERENCE` and `REFERENCEFILES`.
 
 Some result file locations:
 
-- Modelica Association: [https://github.com/modelica/MAP-LIB_ReferenceResults](modelica/MAP-LIB_ReferenceResults)
-- PNLib: [https://github.com/AMIT-HSBI/PNlib](AMIT-HSBI/PNlib)
-- DLR-SR: [https://github.com/DLR-SR/ThermoFluidStream-Regression](DLR-SR/ThermoFluidStream-Regression)
-  and [https://github.com/DLR-SR/PlanarMechanics_ReferenceResults](DLR-SR/PlanarMechanics_ReferenceResults)
+- Modelica Association: [modelica/MAP-LIB_ReferenceResults](https://github.com/modelica/MAP-LIB_ReferenceResults)
+- PNLib: [AMIT-HSBI/PNlib](https://github.com/AMIT-HSBI/PNlib)
+- DLR-SR: [DLR-SR/ThermoFluidStream-Regression](https://github.com/DLR-SR/ThermoFluidStream-Regression)
+  and [DLR-SR/PlanarMechanics_ReferenceResults](https://github.com/DLR-SR/PlanarMechanics_ReferenceResults)
 
 To download the MSL reference files create a file
 installReferenceResults.sh with
diff --git a/conversionscript.py b/conversionscript.py
index 59f00b8..c2b0fc4 100755
--- a/conversionscript.py
+++ b/conversionscript.py
@@ -13,7 +13,6 @@
 from multiprocessing import Pool
 import time
 
-
 parser = argparse.ArgumentParser(description='OpenModelica library testing tool')
 parser.add_argument('libdir', nargs=1)
 parser.add_argument('--diff', action="store_true")
@@ -33,17 +32,6 @@
 os.mkdir("converted-libraries/.openmodelica")
 os.mkdir("converted-libraries/.openmodelica/libraries")
 
-def omcAssert(omc: OMCSessionZMQ, cmd: str, extra: str = ""):
-  res = omc.sendExpression(cmd)
-  if not res:
-    raise Exception(cmd + "\n" + extra + "\n" + (omc.sendExpression("getErrorString()") or ""))
-
-def omcSendExpression(omc: OMCSessionZMQ, cmd: str, extra: str = ""):
-  try:
-    return omc.sendExpression(cmd)
-  except pyparsing.ParseException as e:
-    raise Exception(str(e) + "\n" + cmd + "\n" + extra + "\n" + (omc.sendExpression("getErrorString()") or ""))
-
 mslPath = "%s/Modelica 4.0.0+maint.om/" % libdir
 with open("%s/openmodelica.metadata.json" % mslPath) as f:
   mslData = json.load(f)
@@ -84,7 +72,7 @@ def convertPackage(p):
   print("Start working on %s" % libnameOnFile)
   omc = OMCSessionZMQ()
   libnameOnFileFullPath = "converted-libraries/.openmodelica/libraries/%s/package.mo" % libnameOnFile
-  omcAssert(omc, 'loadFile("%s", uses=false)' % libnameOnFileFullPath)
+  omc.sendExpression('loadFile("%s", uses=false)' % libnameOnFileFullPath)
   errString = omc.sendExpression("getErrorString()")
   if errString:
     print(errString)
@@ -93,12 +81,12 @@ def convertPackage(p):
     raise Exception("Expected to have loaded %s but got %s" % (libnameOnFileFullPath, loadedFilePath))
   gcProfStatsBeforeConversion = omc.sendExpression("GC_get_prof_stats()")
   timeBeforeConvert = time.time()
-  omcAssert(omc, 'runConversionScript(%s, "%s")' % (libname, conversionScript))
+  omc.sendExpression('runConversionScript(%s, "%s")' % (libname, conversionScript))
   print("runConversionScript(%s, %s) OK" % (libnameOnFile, conversionScript))
   uses = data["uses"]
   for (n,v) in data["uses"].items():
     if n in ["Modelica", "ModelicaServices", "Complex"]:
-      omcAssert(omc, 'addClassAnnotation(%s, annotate=$annotation(uses(%s(version="4.0.0"))))' % (libname, n))
+      omc.sendExpression('addClassAnnotation(%s, annotate=$annotation(uses(%s(version="4.0.0"))))' % (libname, n))
       data["uses"][n] = "4.0.0"
   names = omc.sendExpression('getClassNames(%s, sort=true, recursive=true)' % libname)
   names = list(names)
@@ -150,7 +138,7 @@ def convertPackage(p):
           print(errStr)
         raise Exception('--allowErrorsInDiff is not active:\necho(false);before:=readFile("%s");\nafter:=readFile("%s");echo(true);\ndiffModelicaFileListings(before, after, OpenModelica.Scripting.DiffFormat.plain, failOnSemanticsChange=true);\ngetErrorString();' % (oldFile, newFile))
     else:
-      omcAssert(omc, 'writeFile("%s", res)' % (newFile))
+      omc.sendExpression('writeFile("%s", res)' % (newFile))
     isDiff = before != res
     if before != res:
       nDiff += 1
diff --git a/test.py b/test.py
index efea60b..66c235a 100755
--- a/test.py
+++ b/test.py
@@ -665,11 +665,10 @@ def hashReferenceFiles(s):
 
     try:
       omc.sendExpression('loadModel(%s,%s%s)' % (lib,versions,exactMatch))
-    except OMCSessionException:
-      try:
-        print("Failed to load library %s %s: %s" % (library,versions,omc.sendExpression('OpenModelica.Scripting.getErrorString()')))
-      except:
-        print("Failed to load library %s %s. OpenModelica.Scripting.getErrorString() failed..." % (library,conf["libraryVersion"]))
+    except OMCSessionException as e:
+        print("Failed to load library %s %s" % (library,versions))
+        print(e)
+
   # adrpo: do not sort the top level names as sometimes that loads a bad MSL version
   # conf["loadFiles"] = sorted(omc.sendExpression("{getSourceFile(cl) for cl in getClassNames()}"))
   conf["loadFiles"] = omc.sendExpression("{getSourceFile(cl) for cl in getClassNames()}")
@@ -728,7 +727,13 @@ def hashReferenceFiles(s):
   if conf.get("fmi") and fmisimulatorversion:
     conf["libraryVersionRevision"] = conf["libraryVersionRevision"] + " " + fmisimulatorversion.decode("ascii")
     conf["libraryLastChange"] = conf["libraryLastChange"] + " " + fmisimulatorversion.decode("ascii")
-  res=omc.sendExpression('{c for c guard isExperiment(c) and not regexBool(typeNameString(x), "^Modelica_Synchronous\\.WorkInProgress") in getClassNames(%s, recursive=true)}' % library)
+  res = []
+  try:
+    res = omc.sendExpression('{c for c guard isExperiment(c) and not regexBool(typeNameString(x), "^Modelica_Synchronous\\\\.WorkInProgress") in getClassNames(%s, recursive=true)}' % library)
+  except OMCSessionException as e:
+    print("Failed to get class names of library %s", library)
+    print(e)
+
   if conf.get("ignoreModelPrefix"):
     if isinstance(conf["ignoreModelPrefix"], list):
       prefixes = conf["ignoreModelPrefix"]