diff --git a/.gitignore b/.gitignore
index addd9fd..9d078de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,5 +36,6 @@ JuceLibraryCode
 bin
 Installer/macOS/bin
 Installer/win/bin
+Installer/_flat_presets
 .DS_Store
 .claude
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0262d5c..c5793ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -268,10 +268,12 @@ if (UNIX AND NOT APPLE)
 			 DESTINATION lib/clap
 			 COMPONENT CLAP)
 
-	install (DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/plugin/Resources/Presets/"
+	# Presets ship flat — gin's loadDirectory doesn't recurse, and the pre-installer
+	# BinaryData flow stored them flat in the user dir.
+	file (GLOB_RECURSE _preset_xmls "${CMAKE_CURRENT_SOURCE_DIR}/plugin/Resources/Presets/*.xml")
+	install (FILES ${_preset_xmls}
 			 DESTINATION share/SocaLabs/${PLUGIN_NAME}/Presets
-			 COMPONENT Resources
-			 FILES_MATCHING PATTERN "*.xml")
+			 COMPONENT Resources)
 
 	install (DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/plugin/Resources/WavetablesFLAC/"
 			 DESTINATION share/SocaLabs/${PLUGIN_NAME}/Wavetables
diff --git a/Installer/build.sh b/Installer/build.sh
index 482d42e..38c6d9f 100755
--- a/Installer/build.sh
+++ b/Installer/build.sh
@@ -29,6 +29,16 @@ mkdir -p "$PROJECT_ROOT/Installer/$PLATFORM/bin"
 rm -Rf "$PROJECT_ROOT/bin"
 mkdir -p "$PROJECT_ROOT/bin"
 
+#
+# Flatten the nested Presets/<category>/*.xml tree into a single flat directory.
+# gin's loadDirectory() doesn't recurse, and the legacy BinaryData flow stored
+# presets flat in the user directory — keeping flat matches what users see.
+#
+FLAT_PRESETS="$PROJECT_ROOT/Installer/_flat_presets"
+rm -Rf "$FLAT_PRESETS"
+mkdir -p "$FLAT_PRESETS"
+find "$PROJECT_ROOT/plugin/Resources/Presets" -name "*.xml" -type f -exec cp {} "$FLAT_PRESETS/" \;
+
 ############################################################
 # macOS — pkgbuild + productbuild
 ############################################################
@@ -79,8 +89,9 @@ if [ "$PLATFORM" = "macOS" ]; then
   cp -RL "$ART_DIR/AU/$PLUGIN.component" "$STAGE/au/"
   cp -RL "$ART_DIR/CLAP/$PLUGIN.clap"    "$STAGE/clap/"
 
-  # Resources component: factory Wavetables and Presets
-  cp -R "$PROJECT_ROOT/plugin/Resources/Presets"        "$STAGE/resources/Library/Audio/Presets/$VENDOR/$PLUGIN/Presets"
+  # Resources component: factory Wavetables and Presets (presets flattened above)
+  mkdir -p "$STAGE/resources/Library/Audio/Presets/$VENDOR/$PLUGIN/Presets"
+  cp "$FLAT_PRESETS/"*.xml "$STAGE/resources/Library/Audio/Presets/$VENDOR/$PLUGIN/Presets/"
   cp -R "$PROJECT_ROOT/plugin/Resources/WavetablesFLAC" "$STAGE/resources/Library/Audio/Presets/$VENDOR/$PLUGIN/Wavetables"
   find "$STAGE/resources" -name ".DS_Store" -delete
 
diff --git a/Installer/win/Wavetable.iss b/Installer/win/Wavetable.iss
index 9978fe8..eaf49e4 100644
--- a/Installer/win/Wavetable.iss
+++ b/Installer/win/Wavetable.iss
@@ -71,5 +71,6 @@ Source: "bin\VST3\Wavetable.vst3\*"; DestDir: "{commoncf64}\VST3\Wavetable.vst3\
 Source: "bin\CLAP\Wavetable.clap";   DestDir: "{commoncf64}\CLAP";                  Flags: ignoreversion overwritereadonly; Components: clap
 
 ; Factory content (Wavetables, Presets) → C:\ProgramData\SocaLabs\Wavetable\
-Source: "..\..\plugin\Resources\Presets\*.xml";          DestDir: "{commonappdata}\SocaLabs\Wavetable\Presets\";    Flags: ignoreversion;                              Components: resources
+; Presets are flattened by Installer/build.sh into Installer/_flat_presets/.
+Source: "..\_flat_presets\*.xml";                         DestDir: "{commonappdata}\SocaLabs\Wavetable\Presets\";    Flags: ignoreversion;                                 Components: resources
 Source: "..\..\plugin\Resources\WavetablesFLAC\*.wt2048"; DestDir: "{commonappdata}\SocaLabs\Wavetable\Wavetables\"; Flags: ignoreversion recursesubdirs createallsubdirs; Components: resources