diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/OperationOutcomeUtilities.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/OperationOutcomeUtilities.java
index d273381d4..fc22c8938 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/OperationOutcomeUtilities.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/OperationOutcomeUtilities.java
@@ -54,9 +54,9 @@ public class OperationOutcomeUtilities {
       issue.addExpression(message.getLocation());
     }
     // pass through line/col if they're present
-    if (message.getLine() != 0)
+    if (message.getLine() >= 0)
       issue.addExtension().setUrl(ToolingExtensions.EXT_ISSUE_LINE).setValue(new IntegerType(message.getLine()));
-    if (message.getCol() != 0)
+    if (message.getCol() >= 0)
       issue.addExtension().setUrl(ToolingExtensions.EXT_ISSUE_COL).setValue(new IntegerType(message.getCol()));
     issue.setSeverity(convert(message.getLevel()));
     CodeableConcept c = new CodeableConcept();
diff --git a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/Utilities.java b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/Utilities.java
index b4f4f61e6..6eb0ff9bb 100644
--- a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/Utilities.java
+++ b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/Utilities.java
@@ -1346,6 +1346,21 @@ public class Utilities {
     return length + BT;
   }
 
+  public static String describeSize(long length) {
+    if (length < 0) throw new IllegalArgumentException("File length of < 0  passed in...");
+
+    if (length > Math.pow(ONE_MB, 3)) {
+      return length / ((long) Math.pow(ONE_MB, 3)) + GB;
+    }
+    if (length > Math.pow(ONE_MB, 2)) {
+      return length / ((long) Math.pow(ONE_MB, 2)) + MB;
+    }
+    if (length > ONE_MB) {
+      return length / (ONE_MB) + KB;
+    }
+    return length + BT;
+  }
+
   public static List<byte[]> splitBytes(byte[] array, byte[] delimiter) {
     List<byte[]> byteArrays = new LinkedList<byte[]>();
     if (delimiter.length == 0)
diff --git a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/I18nConstants.java b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/I18nConstants.java
index 475b1b510..96ac55b96 100644
--- a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/I18nConstants.java
+++ b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/I18nConstants.java
@@ -386,6 +386,7 @@ public class I18nConstants {
   public static final String TERMINOLOGY_TX_CODE_NOTVALID = "Terminology_TX_Code_NotValid";
   public static final String TERMINOLOGY_TX_CODE_UNKNOWN = "Terminology_TX_Code_Unknown";
   public static final String TERMINOLOGY_TX_CODE_VALUESET = "Terminology_TX_Code_ValueSet";
+  public static final String Terminology_TX_Code_ValueSet_MISSING = "Terminology_TX_Code_ValueSet_MISSING";
   public static final String TERMINOLOGY_TX_CODE_VALUESETMAX = "Terminology_TX_Code_ValueSetMax";
   public static final String TERMINOLOGY_TX_CODE_VALUESET_EXT = "Terminology_TX_Code_ValueSet_Ext";
   public static final String TERMINOLOGY_TX_CODING_COUNT = "Terminology_TX_Coding_Count";
diff --git a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/validation/ValidationMessage.java b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/validation/ValidationMessage.java
index 3213c1a33..49e2302d9 100644
--- a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/validation/ValidationMessage.java
+++ b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/validation/ValidationMessage.java
@@ -164,6 +164,9 @@ public class ValidationMessage implements Comparator<ValidationMessage>, Compara
     public boolean isError() {
       return this == FATAL || this == ERROR;
     }
+    public boolean isHint() {
+      return this == INFORMATION;
+    }
   }
 
   public enum IssueType {
diff --git a/org.hl7.fhir.utilities/src/main/resources/Messages.properties b/org.hl7.fhir.utilities/src/main/resources/Messages.properties
index 20281b53d..18a850034 100644
--- a/org.hl7.fhir.utilities/src/main/resources/Messages.properties
+++ b/org.hl7.fhir.utilities/src/main/resources/Messages.properties
@@ -130,6 +130,7 @@ Terminology_TX_Binding_NoSource2 = Binding has no source, so can''t be checked
 Terminology_TX_Code_NotValid = Code {0} is not a valid code in code system {1}
 Terminology_TX_Code_Unknown = Unknown Code ({0}#{1})
 Terminology_TX_Code_ValueSet = No code provided, and a code is required from the value set {0} ({1})
+Terminology_TX_Code_ValueSet_MISSING = No code provided, and a code is required from the value set
 Terminology_TX_Code_ValueSetMax = No code provided, and a code must be provided from the value set {0} (max value set {1})
 Terminology_TX_Code_ValueSet_Ext = No code provided, and a code should be provided from the value set {0} ({1})
 Terminology_TX_Coding_Count = Expected {0} but found {1} coding elements
diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/ValidatorCli.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/ValidatorCli.java
index 4856c2e1c..ad6a160a1 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/ValidatorCli.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/ValidatorCli.java
@@ -61,6 +61,7 @@ POSSIBILITY OF SUCH DAMAGE.
 import org.hl7.fhir.r5.model.ImplementationGuide;
 import org.hl7.fhir.r5.model.StructureDefinition;
 import org.hl7.fhir.utilities.TimeTracker;
+import org.hl7.fhir.utilities.Utilities;
 import org.hl7.fhir.utilities.VersionUtilities;
 import org.hl7.fhir.validation.cli.model.CliContext;
 import org.hl7.fhir.validation.cli.services.ComparisonService;
@@ -238,6 +239,6 @@ public class ValidatorCli {
         }
         break;
     }
-    System.out.println("Done. " + tt.report());
+    System.out.println("Done. " + tt.report()+". Max Memory = "+Utilities.describeSize(Runtime.getRuntime().maxMemory()));
   }
 }
\ No newline at end of file
diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/cli/services/ValidationService.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/cli/services/ValidationService.java
index 2aa6bdab4..377ea95ed 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/cli/services/ValidationService.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/cli/services/ValidationService.java
@@ -24,6 +24,8 @@ import org.hl7.fhir.validation.cli.utils.EngineMode;
 import org.hl7.fhir.validation.cli.utils.VersionSourceInformation;
 
 import java.io.FileOutputStream;
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryMXBean;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -66,6 +68,7 @@ public class ValidationService {
       messages.forEach(outcome::addMessage);
       response.addOutcome(outcome);
     }
+    System.out.println("  Max Memory: "+Runtime.getRuntime().maxMemory());
     return response;
   }
 
@@ -87,7 +90,8 @@ public class ValidationService {
     List<ValidationRecord> records = new ArrayList<>();
     Resource r = validator.validate(cliContext.getSources(), cliContext.getProfiles(), records);
     int ec = 0;
-    System.out.println("Done. " + validator.getContext().clock().report());
+    MemoryMXBean mbean = ManagementFactory.getMemoryMXBean();
+    System.out.println("Done. " + validator.getContext().clock().report()+". Memory = "+Utilities.describeSize(mbean.getHeapMemoryUsage().getUsed()+mbean.getNonHeapMemoryUsage().getUsed()));
     System.out.println();
 
     if (cliContext.getOutput() == null) {
@@ -211,7 +215,9 @@ public class ValidationService {
   public String initializeValidator(CliContext cliContext, String definitions, TimeTracker tt, String sessionId) throws Exception {
     tt.milestone();
     if (!sessionCache.sessionExists(sessionId)) {
-      System.out.println("No such cached session exists for session id " + sessionId + ", re-instantiating validator.");
+      if (sessionId != null) {
+        System.out.println("No such cached session exists for session id " + sessionId + ", re-instantiating validator.");
+      }
       System.out.print("  Load FHIR v" + cliContext.getSv() + " from " + definitions);
       ValidationEngine validator = new ValidationEngine(definitions, cliContext.getSv(), tt);
       sessionId = sessionCache.cacheSession(validator);