diff --git a/freetype263/opennurbs_public_freetype.xcodeproj/project.pbxproj b/freetype263/opennurbs_public_freetype.xcodeproj/project.pbxproj
index cc0f9dcc..37ce5cf1 100644
--- a/freetype263/opennurbs_public_freetype.xcodeproj/project.pbxproj
+++ b/freetype263/opennurbs_public_freetype.xcodeproj/project.pbxproj
@@ -238,7 +238,7 @@
 		1DB028251ED6433600FA9144 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1240;
+				LastUpgradeCheck = 2600;
 				ORGANIZATIONNAME = "OpenNURBS 3dm File IO Toolkit";
 				TargetAttributes = {
 					1DB0282C1ED6433600FA9144 = {
diff --git a/opennurbs_beam.cpp b/opennurbs_beam.cpp
index 723630ce..5284fb30 100644
--- a/opennurbs_beam.cpp
+++ b/opennurbs_beam.cpp
@@ -1717,8 +1717,11 @@ bool ON_Extrusion::GetTightBoundingBox(ON_BoundingBox& tight_bbox, bool bGrowBox
   bool rc = false;
   if ( m_path.IsValid() && m_profile )
   {
+    ON_Curve* bottom = Profile3d(0, 0.0);
+    ON_Curve* top = Profile3d(0, 1.0);
+
     ON_BoundingBox bbox;
-    if ( m_profile->GetTightBoundingBox(bbox) && GetBoundingBoxHelper(*this,bbox,xform) )
+    if (bottom && bottom->GetTightBoundingBox(bbox, false, xform) && top && top->GetTightBoundingBox(bbox, true, xform))
     {
       if ( bGrowBox )
         tight_bbox.Union(bbox);
@@ -1726,6 +1729,9 @@ bool ON_Extrusion::GetTightBoundingBox(ON_BoundingBox& tight_bbox, bool bGrowBox
         tight_bbox = bbox;
       rc = true;
     }
+
+    delete bottom;
+    delete top;
   }
   return rc;
 }
diff --git a/opennurbs_intersect.cpp b/opennurbs_intersect.cpp
index 125b826c..06b3ae61 100644
--- a/opennurbs_intersect.cpp
+++ b/opennurbs_intersect.cpp
@@ -286,12 +286,18 @@ bool ON_Intersect( const ON_Line& lineA, const ON_Line& lineB,
   // Line A = (5.4301839655138417, -9.5, 0, -0.6, -9.5, 0)
   // Line B = (5.2373595635311068, 10.5, 0, 5.6603292194932395, 10.5, 0)
   // would be found as intersecting, with pivot ~= 2 * M_zero_tolerance
+  //
+  // 10-SEP-2025 MDvR: RH-89164
+  // I have increased the zero tolerance for the matrix by 10-fold, as the lines
+  // Line A(-502.12241078825264, 463.17458426757145, -2.6515717396328807e-12, - 569.15428634054422, 1336.2761199492861, 0)
+  // Line B(-474.85259053896368, 439.79346146347723, -2.7284841053187847e-12, -543.82881481395043, 1338.2204686719679, 0)
+  // were found as intersecting, with pivot ~= 2 * M_zero_tolerance.
   if (fabs(M[1][1]) > 1.) {
     pr_tolerance = fabs(M[1][1]) * ON_SQRT_EPSILON;
-    M_zero_tol = fabs(M[1][1]) * ON_EPSILON;
+    M_zero_tol = 10*fabs(M[1][1]) * ON_EPSILON;
   } else {
     pr_tolerance = ON_SQRT_EPSILON;
-    M_zero_tol = ON_EPSILON;
+    M_zero_tol = 10*ON_EPSILON;
   }
 
   Y[0] =  ON_DotProduct( A, C );
diff --git a/opennurbs_public_version.h b/opennurbs_public_version.h
index 9dd43ad7..3464bdb1 100644
--- a/opennurbs_public_version.h
+++ b/opennurbs_public_version.h
@@ -6,7 +6,7 @@
 
 // To update version numbers, edit ..\build\build_dates.msbuild
 #define RMA_VERSION_MAJOR 8
-#define RMA_VERSION_MINOR 24
+#define RMA_VERSION_MINOR 25
 
 ////////////////////////////////////////////////////////////////
 //
@@ -14,9 +14,9 @@
 // first step in each build.
 //
 #define RMA_VERSION_YEAR   2025
-#define RMA_VERSION_MONTH  10
-#define RMA_VERSION_DATE   8
-#define RMA_VERSION_HOUR   15
+#define RMA_VERSION_MONTH  11
+#define RMA_VERSION_DATE   24
+#define RMA_VERSION_HOUR   11
 #define RMA_VERSION_MINUTE 0
 
 ////////////////////////////////////////////////////////////////
@@ -35,8 +35,8 @@
 //     3 = build system release build
 #define RMA_VERSION_BRANCH 0
 
-#define VERSION_WITH_COMMAS  8,24,25281,15000
-#define VERSION_WITH_PERIODS 8.24.25281.15000
+#define VERSION_WITH_COMMAS  8,25,25328,11000
+#define VERSION_WITH_PERIODS 8.25.25328.11000
 #define COPYRIGHT "Copyright (C) 1993-2025, Robert McNeel & Associates. All Rights Reserved."
 #define SPECIAL_BUILD_DESCRIPTION "Public OpenNURBS C++ 3dm file IO library."
 
@@ -44,11 +44,11 @@
 #define RMA_VERSION_NUMBER_MAJOR_WSTRING L"8"
 #define RMA_PREVIOUS_VERSION_NUMBER_MAJOR_WSTRING L"7"
 
-#define RMA_VERSION_NUMBER_SR_STRING   "SR24"
-#define RMA_VERSION_NUMBER_SR_WSTRING L"SR24"
+#define RMA_VERSION_NUMBER_SR_STRING   "SR25"
+#define RMA_VERSION_NUMBER_SR_WSTRING L"SR25"
 
-#define RMA_VERSION_WITH_PERIODS_STRING   "8.24.25281.15000"
-#define RMA_VERSION_WITH_PERIODS_WSTRING L"8.24.25281.15000"
+#define RMA_VERSION_WITH_PERIODS_STRING   "8.25.25328.11000"
+#define RMA_VERSION_WITH_PERIODS_WSTRING L"8.25.25328.11000"
 
 
 
diff --git a/opennurbs_text.cpp b/opennurbs_text.cpp
index 95cc7a33..dcb1af29 100644
--- a/opennurbs_text.cpp
+++ b/opennurbs_text.cpp
@@ -1729,7 +1729,11 @@ bool ON_TextContent::CreateStackedText(ON_TextRun* run, int cpcount, const ON__U
     stack_width += 2.0 * separator_size;
 
   double top_dy = separator_height + 1.5 * separator_size;
-  double bottom_dy = separator_height - 1.5 * separator_size - (bottom_run->BoundingBox().m_max.y - bottom_run->BoundingBox().m_min.y);
+  // 11 Oct 2025 S. Baer (RH-81827)
+  // Offset for the bottom stacked portion should not take m_min.y into account
+  // Letters that hang below like 'g' were causing the bottom stack offset to be
+  // too large
+  double bottom_dy = separator_height - 1.5 * separator_size - (bottom_run->BoundingBox().m_max.y);// - bottom_run->BoundingBox().m_min.y);
 
   ON_2dPoint box[2];  // total stacked run bounding box
   box[0].Set(top_run->BoundingBox().m_min.x, bottom_dy);
diff --git a/zlib/opennurbs_public_zlib.xcodeproj/project.pbxproj b/zlib/opennurbs_public_zlib.xcodeproj/project.pbxproj
index 7aeed10e..c68380bc 100644
--- a/zlib/opennurbs_public_zlib.xcodeproj/project.pbxproj
+++ b/zlib/opennurbs_public_zlib.xcodeproj/project.pbxproj
@@ -167,7 +167,7 @@
 		1DB028151ED6430300FA9144 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1240;
+				LastUpgradeCheck = 2600;
 				ORGANIZATIONNAME = "OpenNURBS 3dm File IO Toolkit";
 				TargetAttributes = {
 					1DB0281C1ED6430300FA9144 = {