diff --git a/cmake/modules/FindEigen3.cmake b/cmake/modules/FindEigen3.cmake
index e143d5dc09..6944873f6f 100644
--- a/cmake/modules/FindEigen3.cmake
+++ b/cmake/modules/FindEigen3.cmake
@@ -31,7 +31,18 @@ if(NOT Eigen3_FIND_VERSION)
 endif(NOT Eigen3_FIND_VERSION)
 
 macro(_eigen3_check_version)
-  file(READ "${EIGEN3_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header)
+  # Try the Eigen 5.x location first
+  if(EXISTS "${EIGEN3_INCLUDE_DIR}/Eigen/Version")
+    file(READ "${EIGEN3_INCLUDE_DIR}/Eigen/Version" _eigen3_version_header)
+  # Fall back to Eigen 3.x location
+  elseif(EXISTS "${EIGEN3_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h")
+    file(READ "${EIGEN3_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header)
+  else()
+    # Could not locate any known Eigen version header; mark version as not OK and return.
+    set(EIGEN3_VERSION_OK FALSE)
+    message(STATUS "Could not find Eigen version header under ${EIGEN3_INCLUDE_DIR}")
+    return()
+  endif()
 
   string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}")
   set(EIGEN3_WORLD_VERSION "${CMAKE_MATCH_1}")
diff --git a/src/TiledArray/tensor/tensor_interface.h b/src/TiledArray/tensor/tensor_interface.h
index b09dc11665..ad4ba7dc34 100644
--- a/src/TiledArray/tensor/tensor_interface.h
+++ b/src/TiledArray/tensor/tensor_interface.h
@@ -179,7 +179,6 @@ class TensorInterface {
   /// \param data The data pointer for this tensor
   TensorInterface(const range_type& range, pointer data)
       : range_(range), data_(data) {
-    TA_ASSERT(data);
   }
 
   /// Construct a new view of \c tensor
@@ -188,7 +187,6 @@ class TensorInterface {
   /// \param data The data pointer for this tensor
   TensorInterface(range_type&& range, pointer data)
       : range_(std::move(range)), data_(data) {
-    TA_ASSERT(data);
   }
 
   template <typename T1, typename std::enable_if<detail::is_nested_tensor<
diff --git a/tests/sparse_tile.h b/tests/sparse_tile.h
index ef5bd13dff..8465311e85 100644
--- a/tests/sparse_tile.h
+++ b/tests/sparse_tile.h
@@ -66,28 +66,31 @@ class EigenSparseTile {
 
   /// makes an uninitialized matrix
   explicit EigenSparseTile(const range_type& r)
-      : impl_(std::make_shared<impl_type>(
-            std::make_tuple(matrix_type(r.extent()[0], r.extent()[1]), r))) {
-    TA_ASSERT(r.extent()[0] > 0);
-    TA_ASSERT(r.extent()[1] > 0);
-  }
+      : impl_([&]() {
+          TA_ASSERT(r.extent()[0] > 0);
+          TA_ASSERT(r.extent()[1] > 0);
+          return std::make_shared<impl_type>(
+              std::make_tuple(matrix_type(r.extent()[0], r.extent()[1]), r));
+        }()) {}
 
   /// ctor using sparse matrix
   EigenSparseTile(matrix_type&& mat, const range_type& range)
-      : impl_(std::make_shared<impl_type>(
-            std::make_tuple(std::move(mat), range))) {
-    using extent_type = typename range_type::extent_type::value_type;
-    TA_ASSERT(static_cast<extent_type>(mat.rows()) == range.extent()[0]);
-    TA_ASSERT(static_cast<extent_type>(mat.cols()) == range.extent()[1]);
-  }
+      : impl_([&]() {
+          using extent_type = typename range_type::extent_type::value_type;
+          TA_ASSERT(static_cast<extent_type>(mat.rows()) == range.extent()[0]);
+          TA_ASSERT(static_cast<extent_type>(mat.cols()) == range.extent()[1]);
+          return std::make_shared<impl_type>(
+              std::make_tuple(std::move(mat), range));
+        }()) {}
 
   /// ctor using sparse matrix
   EigenSparseTile(const matrix_type& mat, const range_type& range)
-      : impl_(std::make_shared<impl_type>(std::make_tuple(mat, range))) {
-    using extent_type = typename range_type::extent_type::value_type;
-    TA_ASSERT(static_cast<extent_type>(mat.rows()) == range.extent()[0]);
-    TA_ASSERT(static_cast<extent_type>(mat.cols()) == range.extent()[1]);
-  }
+      : impl_([&]() {
+          using extent_type = typename range_type::extent_type::value_type;
+          TA_ASSERT(static_cast<extent_type>(mat.rows()) == range.extent()[0]);
+          TA_ASSERT(static_cast<extent_type>(mat.cols()) == range.extent()[1]);
+          return std::make_shared<impl_type>(std::make_tuple(mat, range));
+        }()) {}
 
   // Deep copy
   EigenSparseTile clone() const {
@@ -683,7 +686,7 @@ struct ArchiveLoadImpl<Archive, Eigen::Triplet<T>> {
   static inline void load(const Archive& ar, Eigen::Triplet<T>& obj) {
     int row, col;
     T value;
-    ar & row & col & value;
+    ar& row& col& value;
     obj = Eigen::Triplet<T>(row, col, value);
   }
 };
@@ -691,7 +694,7 @@ struct ArchiveLoadImpl<Archive, Eigen::Triplet<T>> {
 template <class Archive, typename T>
 struct ArchiveStoreImpl<Archive, Eigen::Triplet<T>> {
   static inline void store(const Archive& ar, const Eigen::Triplet<T>& obj) {
-    ar & obj.row() & obj.col() & obj.value();
+    ar& obj.row() & obj.col() & obj.value();
   }
 };
 }  // namespace archive