diff --git a/direct/src/p3d/AppRunner.py b/direct/src/p3d/AppRunner.py
index 06f3c90fc9..105fea4297 100644
--- a/direct/src/p3d/AppRunner.py
+++ b/direct/src/p3d/AppRunner.py
@@ -112,6 +112,9 @@ class AppRunner(DirectObject):
         # the instance starts up.
         self.rootDir = None
 
+        # The log directory.  Also filled in when the instance starts.
+        self.logDirectory = None
+
         # self.superMirrorUrl, if nonempty, is the "super mirror" URL
         # that should be contacted first before trying the actual
         # host.  This is primarily used for "downloading" from a
@@ -522,7 +525,7 @@ class AppRunner(DirectObject):
                                needsResponse = False)
         self.deferredEvals = []
 
-    def setInstanceInfo(self, rootDir, superMirrorUrl):
+    def setInstanceInfo(self, rootDir, logDirectory, superMirrorUrl):
         """ Called by the browser to set some global information about
         the instance. """
 
@@ -530,6 +533,13 @@ class AppRunner(DirectObject):
         # machine.
         self.rootDir = Filename.fromOsSpecific(rootDir)
 
+        # logDirectory is the directory name where all log files end
+        # up.
+        if logDirectory:
+            self.logDirectory = Filename.fromOsSpecific(logDirectory)
+        else:
+            self.logDirectory = Filename(rootDir, 'log')
+
         # The "super mirror" URL, generally used only by panda3d.exe.
         self.superMirrorUrl = superMirrorUrl
 
@@ -920,6 +930,7 @@ def dummyAppRunner(tokens = [], argv = None):
         rootDir = Filename(Filename.getHomeDirectory(), '.panda3d')
 
     appRunner.rootDir = rootDir
+    appRunner.logDirectory = Filename(rootDir, 'log')
 
     # Of course we will have the panda3d application loaded.
     appRunner.addPackageInfo('panda3d', platform, version, hostUrl)
diff --git a/direct/src/plugin/p3dPythonRun.cxx b/direct/src/plugin/p3dPythonRun.cxx
index 294560d0c5..4633e17531 100755
--- a/direct/src/plugin/p3dPythonRun.cxx
+++ b/direct/src/plugin/p3dPythonRun.cxx
@@ -1195,13 +1195,19 @@ set_instance_info(P3DCInstance *inst, TiXmlElement *xinstance) {
     root_dir = "";
   }
 
+  const char *log_directory = xinstance->Attribute("log_directory");
+  if (log_directory == NULL) {
+    log_directory = "";
+  }
+
   const char *super_mirror = xinstance->Attribute("super_mirror");
   if (super_mirror == NULL) {
     super_mirror = "";
   }
 
   PyObject *result = PyObject_CallMethod
-    (_runner, (char *)"setInstanceInfo", (char *)"ss", root_dir, super_mirror);
+    (_runner, (char *)"setInstanceInfo", (char *)"sss", root_dir, 
+     log_directory, super_mirror);
 
   if (result == NULL) {
     PyErr_Print();