diff --git a/CMakeLists.txt b/CMakeLists.txt
index 14b7c1eb5..0b1ba6eba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,11 @@ if("${CMAKE_SOURCE_DIR}" MATCHES " ")
 	message(FATAL_ERROR "The server cannot build in the path (" ${CMAKE_SOURCE_DIR} ") because it contains a space. Please move the server to a path without spaces.")
 endif()
 
+# Only 64-bit builds are supported: sent and stored values assume 64-bit pointers and sizes
+if(NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
+	message(FATAL_ERROR "The server only builds for 64-bit targets (this configuration is ${CMAKE_SIZEOF_VOID_P}-byte pointers). Use a 64-bit compiler and generator, e.g. -A x64 with Visual Studio.")
+endif()
+
 include(CTest)
 
 set(CMAKE_C_STANDARD 99)
diff --git a/README.md b/README.md
index 23e982680..647bc9a24 100644
--- a/README.md
+++ b/README.md
@@ -326,6 +326,8 @@ CREATE DATABASE darkflame;
 ```
 
 ## Build the server
+The server only builds for 64-bit targets; CMake refuses to configure a 32-bit build.
+
 You can either run `build.sh` when in the root folder of the repository:
 
 ```bash
diff --git a/dCommon/GeneralUtils.cpp b/dCommon/GeneralUtils.cpp
index 3185c4430..a11d991a9 100644
--- a/dCommon/GeneralUtils.cpp
+++ b/dCommon/GeneralUtils.cpp
@@ -237,23 +237,6 @@ bool GeneralUtils::ReplaceInString(std::string& str, const std::string_view from
 	return true;
 }
 
-std::vector<std::wstring> GeneralUtils::SplitString(const std::wstring_view str, const wchar_t delimiter) {
-	std::vector<std::wstring> vector = std::vector<std::wstring>();
-	std::wstring current;
-
-	for (const wchar_t c : str) {
-		if (c == delimiter) {
-			vector.push_back(current);
-			current = L"";
-		} else {
-			current += c;
-		}
-	}
-
-	vector.push_back(std::move(current));
-	return vector;
-}
-
 std::vector<std::u16string> GeneralUtils::SplitString(const std::u16string_view str, const char16_t delimiter) {
 	std::vector<std::u16string> vector = std::vector<std::u16string>();
 	std::u16string current;
diff --git a/dCommon/GeneralUtils.h b/dCommon/GeneralUtils.h
index ba5fc913b..3c2a6c950 100644
--- a/dCommon/GeneralUtils.h
+++ b/dCommon/GeneralUtils.h
@@ -145,8 +145,6 @@ namespace GeneralUtils {
 
 	std::u16string ReadWString(RakNet::BitStream& inStream);
 
-	std::vector<std::wstring> SplitString(const std::wstring_view str, const wchar_t delimiter);
-
 	std::vector<std::u16string> SplitString(const std::u16string_view str, const char16_t delimiter);
 
 	std::vector<std::string> SplitString(const std::string_view str, const char delimiter);
diff --git a/dCommon/dEnums/dCommonVars.h b/dCommon/dEnums/dCommonVars.h
index 271669e30..89946de39 100644
--- a/dCommon/dEnums/dCommonVars.h
+++ b/dCommon/dEnums/dCommonVars.h
@@ -14,6 +14,8 @@
 
 #pragma warning (disable:4251) //Disables SQL warnings
 
+static_assert(sizeof(void*) == 8, "The server only builds for 64-bit targets");
+
 // These are the same define, but they mean two different things in different contexts
 // so a different define to distinguish what calculation is happening will help clarity.
 #define FRAMES_TO_MS(x) (1000 / (x))
diff --git a/dNavigation/DetourExtensions.h b/dNavigation/DetourExtensions.h
index 55d3e29cb..0610cb82e 100644
--- a/dNavigation/DetourExtensions.h
+++ b/dNavigation/DetourExtensions.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <cstdint>
+
 #include "Recast.h"
 #include "DetourCommon.h"
 #include "DetourNavMesh.h"
@@ -9,17 +11,22 @@
 static const int NAVMESHSET_MAGIC = 'M' << 24 | 'S' << 16 | 'E' << 8 | 'T'; // char[4] of 'MSET'
 static const int NAVMESHSET_VERSION = 1;
 
+// Read straight from the .bin navmesh files
 struct NavMeshSetHeader {
-	int magic;
-	int version;
-	int numTiles;
+	int32_t magic;
+	int32_t version;
+	int32_t numTiles;
 	dtNavMeshParams params;
 };
 
 struct NavMeshTileHeader {
 	dtTileRef tileRef;
-	int dataSize;
+	int32_t dataSize;
 };
 
+// The layout the files were always read with on 64-bit builds
+static_assert(sizeof(NavMeshSetHeader) == 12 + sizeof(dtNavMeshParams));
+static_assert(sizeof(NavMeshTileHeader) == (sizeof(dtTileRef) == 8 ? 16 : 8));
+
 static const int MAX_POLYS = 256;
 static const int MAX_SMOOTH = 2048;