diff --git a/direct/src/plugin/p3dInstance.cxx b/direct/src/plugin/p3dInstance.cxx
index 710732fa2c..6a22433941 100644
--- a/direct/src/plugin/p3dInstance.cxx
+++ b/direct/src/plugin/p3dInstance.cxx
@@ -1774,8 +1774,6 @@ mark_p3d_trusted() {
   // Only call this once.
   assert(!_p3d_trusted);
 
-  _p3d_trusted = true;
-
   // Extract the application desc file from the p3d file.
   stringstream sstream;
   if (!_mf_reader.extract_one(sstream, "p3d_info.xml")) {
@@ -1805,9 +1803,16 @@ mark_p3d_trusted() {
   send_notify("onauth");
 
   // Now that we're all set up, start downloading the required
-  // packages, and then start the instance itself if we're already
-  // fully downloaded.
+  // packages.
   add_packages();
+
+  // Until we've done all of the above processing, we haven't fully
+  // committed to setting the trusted flag.  (Setting this flag down
+  // here instead of a few lines above avoids starting the instance in
+  // add_packages(), before we've had a chance to finish processing
+  // this method.)
+  _p3d_trusted = true;
+
   if (get_packages_ready()) {
     mark_download_complete();
   }
@@ -2604,6 +2609,7 @@ set_button_image(ImageType image_type) {
 ////////////////////////////////////////////////////////////////////
 void P3DInstance::
 report_package_info_ready(P3DPackage *package) {
+  nout << "report_package_info_ready: " << package->get_package_name() << "\n";
   if (package == _image_package || package == _certlist_package ||
       package == _p3dcert_package) {
     // A special case: these packages get immediately downloaded,
@@ -2674,7 +2680,7 @@ ready_to_install() {
     _download_package_index = 0;
     _total_downloaded = 0;
     _download_begin = time(NULL);
-    
+
     nout << "Beginning install of " << _downloading_packages.size()
          << " packages, total " << _total_download_size
          << " bytes required.\n";
diff --git a/direct/src/plugin/p3dInstanceManager.cxx b/direct/src/plugin/p3dInstanceManager.cxx
index af0f1c6bbf..7895abbbbc 100644
--- a/direct/src/plugin/p3dInstanceManager.cxx
+++ b/direct/src/plugin/p3dInstanceManager.cxx
@@ -284,6 +284,18 @@ set_plugin_version(int major, int minor, int sequence,
   _plugin_distributor = distributor;
   _coreapi_host_url = coreapi_host_url;
   _coreapi_timestamp = coreapi_timestamp;
+
+  nout << "Plugin version: "
+       << _plugin_major_version << "."
+       << _plugin_minor_version << "."
+       << _plugin_sequence_version;
+  if (!_plugin_official_version) {
+    nout << "c";
+  }
+  nout << "\n";
+  nout << "Plugin distributor: " << _plugin_distributor << "\n";
+  nout << "Core API host URL: " <<  _coreapi_host_url << "\n";
+  nout << "Core API date: " << ctime(&_coreapi_timestamp) << "\n";
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -1303,7 +1315,7 @@ create_runtime_environment() {
       _temp_directory += "/";
   }
 
-  nout << "_root_dir = " << _root_dir
+  nout << "\n_root_dir = " << _root_dir
        << ", _temp_directory = " << _temp_directory
        << ", platform = " << _platform
        << ", host_url = " << _host_url
diff --git a/direct/src/plugin/p3dSession.cxx b/direct/src/plugin/p3dSession.cxx
index db64c218e4..d4e5da9cb0 100644
--- a/direct/src/plugin/p3dSession.cxx
+++ b/direct/src/plugin/p3dSession.cxx
@@ -1080,6 +1080,9 @@ start_p3dpython(P3DInstance *inst) {
     return;
   }
 
+  nout << "Setting environment:\n";
+  write_env();
+
   // Get the filename of the Panda3D multifile.  We need to pass this
   // to p3dpython.
   _mf_filename = inst->_panda3d->get_archive_file_pathname();
@@ -1637,3 +1640,25 @@ p3dpython_thread_run() {
     nout << "Failure on startup.\n";
   }
 }
+
+////////////////////////////////////////////////////////////////////
+//     Function: P3DSession::write_env
+//       Access: Private
+//  Description: Writes _env, which is formatted as a string
+//               containing zero-byte-terminated environment
+//               defintions, to the nout stream, one definition per
+//               line.
+////////////////////////////////////////////////////////////////////
+void P3DSession::
+write_env() const {
+  size_t p = 0;
+  size_t zero = _env.find('\0', p);
+  while (zero != string::npos) {
+    nout << "  ";
+    nout.write(_env.data() + p, zero - p);
+    nout << "\n";
+    p = zero + 1;
+    zero = _env.find('\0', p);
+  }
+}
+
diff --git a/direct/src/plugin/p3dSession.h b/direct/src/plugin/p3dSession.h
index a4e3029846..0a09bc7ca3 100644
--- a/direct/src/plugin/p3dSession.h
+++ b/direct/src/plugin/p3dSession.h
@@ -88,6 +88,8 @@ private:
   THREAD_CALLBACK_DECLARATION(P3DSession, p3dpython_thread_run);
   void p3dpython_thread_run();
 
+  void write_env() const;
+
 private:
   int _session_id;
   string _session_key;