diff --git a/packages/core/src/bootstrap.ts b/packages/core/src/bootstrap.ts
index 43cfa3c3de..643de956ad 100644
--- a/packages/core/src/bootstrap.ts
+++ b/packages/core/src/bootstrap.ts
@@ -147,6 +147,9 @@ export async function preBootstrapConfig(
     });
 
     let config = getConfig();
+    // The logger is set here so that we are able to log any messages prior to the final
+    // logger (which may depend on config coming from a plugin) being set.
+    Logger.useLogger(config.logger);
     config = await runPluginConfigurations(config);
     const entityIdStrategy = config.entityOptions.entityIdStrategy ?? config.entityIdStrategy;
     setEntityIdStrategy(entityIdStrategy, entities);
diff --git a/packages/core/src/entity/register-custom-entity-fields.ts b/packages/core/src/entity/register-custom-entity-fields.ts
index 6d7b357d76..3c90ae44d7 100644
--- a/packages/core/src/entity/register-custom-entity-fields.ts
+++ b/packages/core/src/entity/register-custom-entity-fields.ts
@@ -255,32 +255,70 @@ function getDefault(customField: CustomFieldConfig, dbEngine: DataSourceOptions[
     return type === 'datetime' ? formatDefaultDatetime(dbEngine, defaultValue) : defaultValue;
 }
 
+function assertLocaleFieldsNotSpecified(config: VendureConfig, entityName: keyof CustomFields) {
+    const customFields = config.customFields && config.customFields[entityName];
+    if (customFields) {
+        for (const customField of customFields) {
+            if (customField.type === 'localeString' || customField.type === 'localeText') {
+                Logger.error(
+                    `Custom field "${customField.name}" on entity "${entityName}" cannot be of type "localeString" or "localeText". ` +
+                        `This entity does not support localization.`,
+                );
+            }
+        }
+    }
+}
+
 /**
  * Dynamically registers any custom fields with TypeORM. This function should be run at the bootstrap
  * stage of the app lifecycle, before the AppModule is initialized.
  */
 export function registerCustomEntityFields(config: VendureConfig) {
     registerCustomFieldsForEntity(config, 'Address', CustomAddressFields);
+    assertLocaleFieldsNotSpecified(config, 'Address');
+
     registerCustomFieldsForEntity(config, 'Administrator', CustomAdministratorFields);
+    assertLocaleFieldsNotSpecified(config, 'Administrator');
+
     registerCustomFieldsForEntity(config, 'Asset', CustomAssetFields);
+    assertLocaleFieldsNotSpecified(config, 'Asset');
+
     registerCustomFieldsForEntity(config, 'Collection', CustomCollectionFields);
     registerCustomFieldsForEntity(config, 'Collection', CustomCollectionFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'Channel', CustomChannelFields);
+    assertLocaleFieldsNotSpecified(config, 'Channel');
+
     registerCustomFieldsForEntity(config, 'Customer', CustomCustomerFields);
+    assertLocaleFieldsNotSpecified(config, 'Customer');
+
     registerCustomFieldsForEntity(config, 'CustomerGroup', CustomCustomerGroupFields);
+    assertLocaleFieldsNotSpecified(config, 'CustomerGroup');
+
     registerCustomFieldsForEntity(config, 'Facet', CustomFacetFields);
     registerCustomFieldsForEntity(config, 'Facet', CustomFacetFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'FacetValue', CustomFacetValueFields);
     registerCustomFieldsForEntity(config, 'FacetValue', CustomFacetValueFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'Fulfillment', CustomFulfillmentFields);
+    assertLocaleFieldsNotSpecified(config, 'Fulfillment');
+
     registerCustomFieldsForEntity(config, 'Order', CustomOrderFields);
+    assertLocaleFieldsNotSpecified(config, 'Order');
+
     registerCustomFieldsForEntity(config, 'OrderLine', CustomOrderLineFields);
+    assertLocaleFieldsNotSpecified(config, 'OrderLine');
+
     registerCustomFieldsForEntity(config, 'PaymentMethod', CustomPaymentMethodFields);
     registerCustomFieldsForEntity(config, 'PaymentMethod', CustomPaymentMethodFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'Product', CustomProductFields);
     registerCustomFieldsForEntity(config, 'Product', CustomProductFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'ProductOption', CustomProductOptionFields);
     registerCustomFieldsForEntity(config, 'ProductOption', CustomProductOptionFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'ProductOptionGroup', CustomProductOptionGroupFields);
     registerCustomFieldsForEntity(
         config,
@@ -288,19 +326,36 @@ export function registerCustomEntityFields(config: VendureConfig) {
         CustomProductOptionGroupFieldsTranslation,
         true,
     );
+
     registerCustomFieldsForEntity(config, 'ProductVariant', CustomProductVariantFields);
     registerCustomFieldsForEntity(config, 'ProductVariant', CustomProductVariantFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'Promotion', CustomPromotionFields);
     registerCustomFieldsForEntity(config, 'Promotion', CustomPromotionFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'TaxCategory', CustomTaxCategoryFields);
+    assertLocaleFieldsNotSpecified(config, 'TaxCategory');
+
     registerCustomFieldsForEntity(config, 'TaxRate', CustomTaxRateFields);
+    assertLocaleFieldsNotSpecified(config, 'TaxRate');
+
     registerCustomFieldsForEntity(config, 'User', CustomUserFields);
+    assertLocaleFieldsNotSpecified(config, 'User');
     registerCustomFieldsForEntity(config, 'GlobalSettings', CustomGlobalSettingsFields);
+    assertLocaleFieldsNotSpecified(config, 'GlobalSettings');
+
     registerCustomFieldsForEntity(config, 'Region', CustomRegionFields);
     registerCustomFieldsForEntity(config, 'Region', CustomRegionFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'Seller', CustomSellerFields);
+    assertLocaleFieldsNotSpecified(config, 'Seller');
+
     registerCustomFieldsForEntity(config, 'ShippingMethod', CustomShippingMethodFields);
     registerCustomFieldsForEntity(config, 'ShippingMethod', CustomShippingMethodFieldsTranslation, true);
+
     registerCustomFieldsForEntity(config, 'StockLocation', CustomStockLocationFields);
+    assertLocaleFieldsNotSpecified(config, 'StockLocation');
+
     registerCustomFieldsForEntity(config, 'Zone', CustomZoneFields);
+    assertLocaleFieldsNotSpecified(config, 'Zone');
 }