diff --git a/api/src/org/labkey/api/data/BeanViewForm.java b/api/src/org/labkey/api/data/BeanViewForm.java
index e098b951fe4..752c04e732f 100644
--- a/api/src/org/labkey/api/data/BeanViewForm.java
+++ b/api/src/org/labkey/api/data/BeanViewForm.java
@@ -20,7 +20,10 @@
 import org.apache.commons.beanutils.ConvertUtils;
 import org.apache.commons.beanutils.DynaBean;
 import org.apache.commons.beanutils.DynaClass;
+import org.labkey.api.action.BaseViewAction.BeanUtilsPropertyBindingResult;
 import org.labkey.api.action.HasBindParameters;
+import org.labkey.api.action.NullSafeBindException;
+import org.springframework.validation.BindException;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -86,6 +89,13 @@ public void setBean(K bean)
         setTypedValues(factory.toMap(bean, null), false);
     }
 
+    @Override
+    public BindException createErrors()
+    {
+        // Teaches Spring to resolve field names via string lookups instead of getters. e.g., errors.rejectValue().
+        return new NullSafeBindException(new BeanUtilsPropertyBindingResult(this, "form"));
+    }
+
     @Override
     public Map<String, Object> getValuesToBind()
     {
diff --git a/api/src/org/labkey/api/data/TableViewForm.java b/api/src/org/labkey/api/data/TableViewForm.java
index 66dcde6349d..36cadf8bf9c 100644
--- a/api/src/org/labkey/api/data/TableViewForm.java
+++ b/api/src/org/labkey/api/data/TableViewForm.java
@@ -30,7 +30,6 @@
 import org.labkey.api.action.NullSafeBindException;
 import org.labkey.api.action.SpringActionController;
 import org.labkey.api.collections.CaseInsensitiveHashMap;
-import org.labkey.api.ontology.Quantity;
 import org.labkey.api.query.FieldKey;
 import org.labkey.api.security.permissions.DeletePermission;
 import org.labkey.api.security.permissions.InsertPermission;
@@ -897,10 +896,16 @@ else if (orig.getName().startsWith(ARRAY_MARKER) && orig.getValue()!=null)
             setValueToBind(pv.getName(), pv.getValue());
         }
 
-        BindException errors = new NullSafeBindException(this, "form");
+        BindException errors = createErrors();
         validateBind(errors);
         return errors;
     }
+
+    // Construct and return a BindException that's appropriate for this form
+    public BindException createErrors()
+    {
+        return new NullSafeBindException(this, "form");
+    }
 }
 
 
diff --git a/api/src/org/labkey/api/query/UserSchemaAction.java b/api/src/org/labkey/api/query/UserSchemaAction.java
index 4f267a9c678..f2ba8aea605 100644
--- a/api/src/org/labkey/api/query/UserSchemaAction.java
+++ b/api/src/org/labkey/api/query/UserSchemaAction.java
@@ -17,7 +17,6 @@
 
 import org.jetbrains.annotations.Nullable;
 import org.labkey.api.action.FormViewAction;
-import org.labkey.api.action.NullSafeBindException;
 import org.labkey.api.action.SpringActionController;
 import org.labkey.api.attachments.SpringAttachmentFile;
 import org.labkey.api.audit.TransactionAuditProvider;
@@ -79,7 +78,7 @@ public BindException bindParameters(PropertyValues m) throws Exception
         QueryUpdateForm command = new QueryUpdateForm(_table, getViewContext(), null);
         if (command.isBulkUpdate())
             command.setValidateRequired(false);
-        BindException errors = new NullSafeBindException(new BeanUtilsPropertyBindingResult(command, "form"));
+        BindException errors = command.createErrors();
         command.validateBind(errors);
         return errors;
     }
diff --git a/core/webapp/Ext.ux.form.LovCombo.js b/core/webapp/Ext.ux.form.LovCombo.js
index 88bd0f0011c..5bf01396cb2 100644
--- a/core/webapp/Ext.ux.form.LovCombo.js
+++ b/core/webapp/Ext.ux.form.LovCombo.js
@@ -293,8 +293,10 @@ Ext.ux.form.LovCombo = Ext.extend(Ext.form.ComboBox, {
                 this.store.suspendEvents(true);
 				this.store.clearFilter();
 				this.store.each(function (r) {
+					// GH Issue 1266: String() (not JSON.stringify) so native RegExp.escape doesn't throw on a
+					// numeric valueField, while string values stay unquoted to match getCheckedValue() output.
 					var checked = !(!v.match(
-							'(^|' + this.separator + ')' + RegExp.escape(JSON.stringify(r.get(this.valueField)))
+							'(^|' + this.separator + ')' + RegExp.escape(String(r.get(this.valueField)))
 							+ '(' + this.separator + '|$)'));
 					r.set(this.checkField, checked);
 				}, this);
diff --git a/mothership/src/org/labkey/mothership/MothershipController.java b/mothership/src/org/labkey/mothership/MothershipController.java
index 63cde942bb9..4a73310718b 100644
--- a/mothership/src/org/labkey/mothership/MothershipController.java
+++ b/mothership/src/org/labkey/mothership/MothershipController.java
@@ -1923,8 +1923,9 @@ public void testUpdateInstallationContainerScoping() throws Exception
         public void testUpdateStackTraceContainerScoping() throws Exception
         {
             User admin = getAdmin();
-            Container folderA = createContainer("A");
-            Container folderB = createContainer("B");
+            MothershipModule module = ModuleLoader.getInstance().getModule(MothershipModule.class);
+            Container folderA = createContainer("A", module);
+            Container folderB = createContainer("B", module);
 
             // An exception stack trace that lives in folder B (StackTraceHash is derived from the stack trace text)
             ExceptionStackTrace st = new ExceptionStackTrace();
diff --git a/study/src/org/labkey/study/pipeline/FileAnalysisDatasetTask.java b/study/src/org/labkey/study/pipeline/FileAnalysisDatasetTask.java
index 136b69eacc1..bb6dceafc3f 100644
--- a/study/src/org/labkey/study/pipeline/FileAnalysisDatasetTask.java
+++ b/study/src/org/labkey/study/pipeline/FileAnalysisDatasetTask.java
@@ -16,7 +16,6 @@
 package org.labkey.study.pipeline;
 
 import org.jetbrains.annotations.NotNull;
-import org.labkey.api.action.BaseViewAction;
 import org.labkey.api.action.NullSafeBindException;
 import org.labkey.api.admin.PipelineJobLoggerGetter;
 import org.labkey.api.assay.transform.DataTransformService;
@@ -114,7 +113,7 @@ else if (params.containsKey(DataTransformService.ORIGINAL_SOURCE_PATH))
             for (String error : readerErrors)
                 _ctx.getLogger().error(error);
 
-            BindException errors = new NullSafeBindException(new BaseViewAction.BeanUtilsPropertyBindingResult(this, "pipeline"));
+            BindException errors = new NullSafeBindException(this, "pipeline");
             boolean allowDomainUpdates = true;
             if (_ctx.getProperties().containsKey(StudyImportContext.ALLOW_DOMAIN_UPDATES))
                 allowDomainUpdates = Boolean.parseBoolean(_ctx.getProperties().get(StudyImportContext.ALLOW_DOMAIN_UPDATES));