diff --git a/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/context/SimpleWorkerContext.java b/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/context/SimpleWorkerContext.java
index bc6b2bec3..9dcd8d253 100644
--- a/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/context/SimpleWorkerContext.java
+++ b/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/context/SimpleWorkerContext.java
@@ -140,6 +140,11 @@ public class SimpleWorkerContext extends BaseWorkerContext implements IWorkerCon
     return res;
   }
 
+  public static SimpleWorkerContext fromNothing() throws FileNotFoundException, IOException, FHIRException {
+    SimpleWorkerContext res = new SimpleWorkerContext();
+    return res;
+  }
+
   public static SimpleWorkerContext fromPackage(NpmPackage pi, boolean allowDuplicates) throws FileNotFoundException, IOException, FHIRException {
     SimpleWorkerContext res = new SimpleWorkerContext();
     res.setAllowLoadingDuplicates(allowDuplicates);
diff --git a/org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/context/SimpleWorkerContext.java b/org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/context/SimpleWorkerContext.java
index 2d273468d..5358e9233 100644
--- a/org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/context/SimpleWorkerContext.java
+++ b/org.hl7.fhir.r4/src/main/java/org/hl7/fhir/r4/context/SimpleWorkerContext.java
@@ -147,6 +147,11 @@ public class SimpleWorkerContext extends BaseWorkerContext implements IWorkerCon
     return res;
   }
 
+  public static SimpleWorkerContext fromNothing() throws FileNotFoundException, IOException, FHIRException {
+    SimpleWorkerContext res = new SimpleWorkerContext();
+    return res;
+  }
+
   public static SimpleWorkerContext fromPackage(NpmPackage pi, boolean allowDuplicates) throws FileNotFoundException, IOException, FHIRException {
     SimpleWorkerContext res = new SimpleWorkerContext();
     res.setAllowLoadingDuplicates(allowDuplicates);
diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/IgLoader.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/IgLoader.java
index 637dbb675..77d43762e 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/IgLoader.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/IgLoader.java
@@ -785,7 +785,7 @@ public class IgLoader {
       else if (fn.endsWith(".json") && !fn.endsWith("template.json"))
         res = new org.hl7.fhir.dstu3.formats.JsonParser().parse(new ByteArrayInputStream(content));
       else if (fn.endsWith(".txt") || fn.endsWith(".map")  || fn.endsWith(".fml"))
-        res = new org.hl7.fhir.dstu3.utils.StructureMapUtilities(null).parse(new String(content));
+        res = new org.hl7.fhir.dstu3.utils.StructureMapUtilities(org.hl7.fhir.dstu3.context.SimpleWorkerContext.fromNothing()).parse(new String(content));
       else
         throw new FHIRException("Unsupported format for " + fn);
       r = VersionConvertorFactory_30_50.convertResource(res);
@@ -796,7 +796,7 @@ public class IgLoader {
       else if (fn.endsWith(".json") && !fn.endsWith("template.json"))
         res = new org.hl7.fhir.r4.formats.JsonParser().parse(new ByteArrayInputStream(content));
       else if (fn.endsWith(".txt") || fn.endsWith(".map")  || fn.endsWith(".fml"))
-        res = new org.hl7.fhir.r4.utils.StructureMapUtilities(null).parse(new String(content), fn);
+        res = new org.hl7.fhir.r4.utils.StructureMapUtilities(org.hl7.fhir.r4.context.SimpleWorkerContext.fromNothing()).parse(new String(content), fn);
       else
         throw new FHIRException("Unsupported format for " + fn);
       r = VersionConvertorFactory_40_50.convertResource(res);
@@ -807,7 +807,7 @@ public class IgLoader {
       else if (fn.endsWith(".json") && !fn.endsWith("template.json"))
         res = new org.hl7.fhir.r4b.formats.JsonParser().parse(new ByteArrayInputStream(content));
       else if (fn.endsWith(".txt") || fn.endsWith(".map")  || fn.endsWith(".fml"))
-        res = new org.hl7.fhir.r4b.utils.structuremap.StructureMapUtilities(null).parse(new String(content), fn);
+        res = new org.hl7.fhir.r4b.utils.structuremap.StructureMapUtilities(org.hl7.fhir.r4b.context.SimpleWorkerContext.fromNothing()).parse(new String(content), fn);
       else
         throw new FHIRException("Unsupported format for " + fn);
       r = VersionConvertorFactory_43_50.convertResource(res);