diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index c0a8cbbc9..872c5ebaa 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -17,7 +17,7 @@ jobs:
     name: clang-format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Run clang-format style check for C/C++
         uses: jidicula/clang-format-action@v4.15.0
         with:
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         run: |
           sudo apt-key adv --fetch-keys http://repos.codelite.org/CodeLite.asc
@@ -45,14 +45,14 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: chartboost/ruff-action@v1
 
   flake8:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
@@ -62,7 +62,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/osxbinary.yml b/.github/workflows/osxbinary.yml
index 36e1955bb..54a2af93f 100644
--- a/.github/workflows/osxbinary.yml
+++ b/.github/workflows/osxbinary.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: macos-14
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         run: |
             brew install automake autoconf
diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 6c8605226..803659d4b 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -21,7 +21,7 @@ jobs:
         python-version: ['3.9', '3.13']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
@@ -48,7 +48,7 @@ jobs:
         python-version: ['3.13']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
@@ -71,7 +71,7 @@ jobs:
         python-version: ['3.13']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
@@ -94,7 +94,7 @@ jobs:
         python-version: ['3.13']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/tools.yml b/.github/workflows/tools.yml
index e4c052336..373cd44bf 100644
--- a/.github/workflows/tools.yml
+++ b/.github/workflows/tools.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         run: |
           sudo apt-key adv --fetch-keys http://repos.codelite.org/CodeLite.asc
@@ -44,7 +44,7 @@ jobs:
     runs-on: macos-14
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         run: brew install automake autoconf wxwidgets
       - run: aclocal
@@ -63,7 +63,7 @@ jobs:
     runs-on: macos-15
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         run: brew install automake autoconf wxwidgets
       - run: aclocal
@@ -85,7 +85,7 @@ jobs:
       run:
         shell: msys2 {0}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: msys2/setup-msys2@v2
         with:
           install: mingw-w64-x86_64-toolchain make automake autoconf
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 7a128e639..bff183887 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: windows-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
diff --git a/ChangeLog b/ChangeLog
index da05cf682..75d0e987c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -15,7 +15,7 @@
   mixed behavior profiles (#616)
 
 
-## [16.3.2] - unreleased
+## [16.3.2] - 2025-12-04
 
 ### Fixed
 - Parsing of output of `gambit-logit` in the graphical interface did not handle the
diff --git a/doc/tools.lcp.rst b/doc/tools.lcp.rst
index 486ce6c20..377e794d0 100644
--- a/doc/tools.lcp.rst
+++ b/doc/tools.lcp.rst
@@ -9,7 +9,7 @@ computes Nash equilibria by finding solutions to a linear
 complementarity problem. For extensive games, the program uses the
 sequence form representation of the extensive game, as defined by
 Koller, Megiddo, and von Stengel [KolMegSte94]_, and applies the
-algorithm developed by Lemke. For strategic games, the program using
+algorithm developed by Lemke. For strategic games, the program uses
 the method of Lemke and Howson [LemHow64]_.  There exist strategic
 games for which some equilibria cannot be located by this method; see
 Shapley [Sha74]_.
diff --git a/src/gui/gameframe.cc b/src/gui/gameframe.cc
index b99aa496e..b468566fb 100644
--- a/src/gui/gameframe.cc
+++ b/src/gui/gameframe.cc
@@ -489,6 +489,10 @@ void gbtGameFrame::MakeMenus()
 
   viewMenu->Append(GBT_MENU_VIEW_STRATEGIC, _("&Strategic game"),
                    wxT("Display the reduced strategic representation ") wxT("of the game"), true);
+  if (!m_doc->GetGame()->IsTree()) {
+    viewMenu->Check(GBT_MENU_VIEW_STRATEGIC, true);
+    viewMenu->Enable(GBT_MENU_VIEW_STRATEGIC, false);
+  }
 
   auto *formatMenu = new wxMenu;
   AppendBitmapItem(formatMenu, GBT_MENU_FORMAT_LAYOUT, _("&Layout"),
diff --git a/src/pygambit/game.pxi b/src/pygambit/game.pxi
index 082b08b62..b426ff58f 100644
--- a/src/pygambit/game.pxi
+++ b/src/pygambit/game.pxi
@@ -1488,7 +1488,7 @@ class Game:
             except KeyError:
                 raise KeyError(f"{funcname}(): no information set with label '{infoset}'")
         raise TypeError(
-            f"{funcname}(): {argname} must be Infoset or str, not {node.__class__.__name__}"
+            f"{funcname}(): {argname} must be Infoset or str, not {infoset.__class__.__name__}"
         )
 
     def _resolve_action(self,