diff --git a/fastergt/src/play/modules/gtengineplugin/gt_integration/GTFileResolver1xImpl.java b/fastergt/src/play/modules/gtengineplugin/gt_integration/GTFileResolver1xImpl.java
index 70c70e80..513e0540 100644
--- a/fastergt/src/play/modules/gtengineplugin/gt_integration/GTFileResolver1xImpl.java
+++ b/fastergt/src/play/modules/gtengineplugin/gt_integration/GTFileResolver1xImpl.java
@@ -5,7 +5,10 @@
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 import javax.annotation.Nullable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import play.ClasspathResource;
 import play.Play;
 import play.template2.GTFileResolver;
@@ -13,6 +16,7 @@
 import play.templates.TemplateLoader;
 
 public class GTFileResolver1xImpl implements GTFileResolver.Resolver {
+  private static final Logger logger = LoggerFactory.getLogger(GTFileResolver1xImpl.class);
   private final List<File> templateFolders;
 
   public GTFileResolver1xImpl(List<File> templatesPaths) {
@@ -87,9 +91,11 @@ public GTTemplateLocationReal getTemplateLocationFromRelativePath(String relativ
     URL url = null;
     if (vf == null) {
       try {
-        final String classloadedPrefix = "/" + Play.tmpDir.getName() + "/" + TemplateLoader.CLASSPATH_LOADED_TEMPLATE_TMP_PATH_PREFIX;
+        final String classloadedPrefix = "/" + (Play.tmpDir == null ? "" : Play.tmpDir.getName() + "/") + TemplateLoader.CLASSPATH_LOADED_TEMPLATE_TMP_PATH_PREFIX;
         if (relativePath.startsWith(classloadedPrefix)) {
           relativePath = relativePath.split(classloadedPrefix, 2) [1];
+        } else {
+          logger.error("appRoot: {}, relpath: {}, prefix: {}", Play.appRoot.getName(), relativePath, classloadedPrefix);
         }
         ClasspathResource cf = null;
         // do the search as the TemplateLoader.loadTemplateFromClasspath()'s usage:
@@ -101,6 +107,7 @@ public GTTemplateLocationReal getTemplateLocationFromRelativePath(String relativ
         }
         url = cf.url();
       } catch (Exception e) {
+        logger.trace("Ignoring exception while resolving {}", relativePath, e);
         return null;
       }
     }
diff --git a/framework/src/play/mvc/Router.java b/framework/src/play/mvc/Router.java
index 1dc0954a..f16ec77b 100644
--- a/framework/src/play/mvc/Router.java
+++ b/framework/src/play/mvc/Router.java
@@ -15,6 +15,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.regex.Matcher;
@@ -71,7 +72,7 @@ private static void loadRoutesFromFile() {
     // This automatically added route is needed to serve the static files extracted from classpath.
     // The "public" postfix (!) on the end is to prevent unwanted leakage of classpath resource files!
     // TODO: automatically expose routes (e.g. with "staticDir:" parsing or with application.conf settings from dependencies instead of hardcoded "public"
-    addRoute("GET", "/public/", "staticDir:" + Play.tmpDir.getName() + "/" + SERVER_HELPER_FIND_FILE_TMP_PATH_PREFIX + "public");
+    addRoute("GET", "/public/", "staticDir:" + Optional.ofNullable(Play.tmpDir).orElse(new File("")).getName() + "/" + SERVER_HELPER_FIND_FILE_TMP_PATH_PREFIX + "public");
     lastLoading = System.currentTimeMillis();
   }
 
diff --git a/framework/src/play/server/ServerHelper.java b/framework/src/play/server/ServerHelper.java
index 01c17f9c..3482484e 100644
--- a/framework/src/play/server/ServerHelper.java
+++ b/framework/src/play/server/ServerHelper.java
@@ -14,6 +14,7 @@
 import java.util.Date;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 import java.util.stream.Stream;
 import javax.annotation.CheckReturnValue;
 import javax.annotation.Nonnull;
@@ -125,8 +126,7 @@ public static File findFile(String resource) {
       }
     }
     if (file == null) {
-      final String pr = SERVER_HELPER_FIND_FILE_TMP_PATH_PREFIX + resource;
-      file = new File(Play.tmpDir, SERVER_HELPER_FIND_FILE_TMP_PATH_PREFIX + resource);
+      file = new File(Optional.ofNullable(Play.tmpDir).orElse(Play.appRoot), SERVER_HELPER_FIND_FILE_TMP_PATH_PREFIX + resource);
       if (file.exists())
           return file;
       try {
diff --git a/replay-tests/multi-module-app/app/src/main/resources/conf/application.app.conf b/replay-tests/multi-module-app/app/src/main/resources/conf/application.app.conf
index 6cfec49d..e3597086 100644
--- a/replay-tests/multi-module-app/app/src/main/resources/conf/application.app.conf
+++ b/replay-tests/multi-module-app/app/src/main/resources/conf/application.app.conf
@@ -1 +1,3 @@
 application.app.included=app.conf included!
+%test.play.tmp=none
+play.tmp=none