diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/freemarker/BaseSiteAdminController.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/freemarker/BaseSiteAdminController.java
index 2dc1d5891..f65c41a47 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/freemarker/BaseSiteAdminController.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/freemarker/BaseSiteAdminController.java
@@ -199,12 +199,17 @@ public class BaseSiteAdminController extends FreemarkerHttpServlet {
 
             String error = null;
             String explanation = null;
-            TBoxReasonerStatus status = ApplicationUtils.instance().getTBoxReasonerModule().getStatus();
-            if (!status.isConsistent()) {
-                error = "INCONSISTENT ONTOLOGY: reasoning halted.";
-                explanation = status.getExplanation();
-            } else if ( status.isInErrorState() ) {
-                error = "An error occurred during reasoning. Reasoning has been halted. See error log for details.";
+            try {
+                TBoxReasonerStatus status = ApplicationUtils.instance().getTBoxReasonerModule().getStatus();
+                if (!status.isConsistent()) {
+                    error = "INCONSISTENT ONTOLOGY: reasoning halted.";
+                    explanation = status.getExplanation();
+                } else if ( status.isInErrorState() ) {
+                    error = "An error occurred during reasoning. Reasoning has been halted. See error log for details.";
+                }
+            } catch (IllegalStateException e) {
+                error = "The inferencing engine is disabled. Data entered manually may exhibit unexpected behavior prior to inferencing.";
+                log.debug("Status of reasoner could not be determined. It is likely disabled.", e);
             }
 
             if (error != null) {
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java
index fe77766d3..5e085c99d 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java
@@ -192,29 +192,33 @@ public class JenaAdminActions extends BaseEditController {
 	}
 
     private void printRestrictions() {
-    	TBoxReasonerModule reasoner = ApplicationUtils.instance().getTBoxReasonerModule();
-    	for (Restriction rest : reasoner.listRestrictions() ) {
-    		if (rest.isAllValuesFromRestriction()) {
-    			log.trace("All values from: ");
-    			AllValuesFromRestriction avfr = rest.asAllValuesFromRestriction();
-    			Resource res = avfr.getAllValuesFrom();
-    			if (res.canAs(OntClass.class)) {
-    				OntClass resClass = res.as(OntClass.class);
-    				for (Resource inst : resClass.listInstances().toList() ) {
-    					log.trace("    -"+inst.getURI());
-    				}
-    			}
-    		} else if (rest.isSomeValuesFromRestriction()) {
-    			log.trace("Some values from: ");
-    		} else if (rest.isHasValueRestriction()) {
-    			log.trace("Has value: ");
-    		}
-    		log.trace("On property "+rest.getOnProperty().getURI());
-    		for (Resource inst : rest.listInstances().toList() ) {
-    			log.trace("     "+inst.getURI());
-    		}
-
-    	}
+		try {
+			TBoxReasonerModule reasoner = ApplicationUtils.instance().getTBoxReasonerModule();
+			for (Restriction rest : reasoner.listRestrictions() ) {
+				if (rest.isAllValuesFromRestriction()) {
+					log.trace("All values from: ");
+					AllValuesFromRestriction avfr = rest.asAllValuesFromRestriction();
+					Resource res = avfr.getAllValuesFrom();
+					if (res.canAs(OntClass.class)) {
+						OntClass resClass = res.as(OntClass.class);
+						for (Resource inst : resClass.listInstances().toList() ) {
+							log.trace("    -"+inst.getURI());
+						}
+					}
+				} else if (rest.isSomeValuesFromRestriction()) {
+					log.trace("Some values from: ");
+				} else if (rest.isHasValueRestriction()) {
+					log.trace("Has value: ");
+				}
+				log.trace("On property "+rest.getOnProperty().getURI());
+				for (Resource inst : rest.listInstances().toList() ) {
+					log.trace("     "+inst.getURI());
+				}
+			}
+		}
+		catch (IllegalStateException e) {
+			log.warn("Status of reasoner could not be determined. It is likely disabled", e);
+		}
     }
 
     private void removeLongLiterals() {
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dao/jena/DataPropertyDaoJena.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dao/jena/DataPropertyDaoJena.java
index e45ec80ca..a17ef6ec1 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dao/jena/DataPropertyDaoJena.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dao/jena/DataPropertyDaoJena.java
@@ -360,8 +360,13 @@ public class DataPropertyDaoJena extends PropertyDaoJena implements
     }
 
     protected boolean reasoningAvailable() {
-    	TBoxReasonerStatus status = ApplicationUtils.instance().getTBoxReasonerModule().getStatus();
-    	return status.isConsistent() && !status.isInErrorState();
+        try {
+            TBoxReasonerStatus status = ApplicationUtils.instance().getTBoxReasonerModule().getStatus();
+            return status.isConsistent() && !status.isInErrorState();
+        } catch (IllegalStateException e) {
+            log.debug("Status of reasoner could not be determined. It is likely disabled.", e);
+            return false;
+        }
     }
 
     private String getRequiredDatatypeURI(Individual individual, DataProperty dataprop, List<String> vclassURIs) {
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/fields/IndividualsViaVClassOptions.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/fields/IndividualsViaVClassOptions.java
index a251489eb..80c9cf273 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/fields/IndividualsViaVClassOptions.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/fields/IndividualsViaVClassOptions.java
@@ -8,6 +8,9 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 import edu.cornell.mannlib.vitro.webapp.application.ApplicationUtils;
 import edu.cornell.mannlib.vitro.webapp.beans.Individual;
 import edu.cornell.mannlib.vitro.webapp.dao.IndividualDao;
@@ -17,6 +20,8 @@ import edu.cornell.mannlib.vitro.webapp.modules.tboxreasoner.TBoxReasonerStatus;
 
 public class IndividualsViaVClassOptions implements FieldOptions {
 
+    protected static final Log log = LogFactory.getLog(IndividualsViaVClassOptions.class.getName());
+
     public static final String LEFT_BLANK = "";
     protected List<String> vclassURIs;
     protected String defaultOptionLabel;
@@ -102,8 +107,13 @@ public class IndividualsViaVClassOptions implements FieldOptions {
     }
 
     protected boolean isReasoningAvailable(){
-    	TBoxReasonerStatus status = ApplicationUtils.instance().getTBoxReasonerModule().getStatus();
-    	return status.isConsistent() && !status.isInErrorState();
+    	try {
+            TBoxReasonerStatus status = ApplicationUtils.instance().getTBoxReasonerModule().getStatus();
+            return status.isConsistent() && !status.isInErrorState();
+        } catch (IllegalStateException e) {
+            log.debug("Status of reasoner could not be determined. It is likely disabled.", e);
+            return false;
+        }
     }
 
     protected Map<String, Individual> addWhenMissingInference( String classUri , WebappDaoFactory wDaoFact ){