diff --git a/resources/installer/windows-vst3.nsh b/resources/installer/windows-vst3.nsh
index 2ded158..f9e290f 100644
--- a/resources/installer/windows-vst3.nsh
+++ b/resources/installer/windows-vst3.nsh
@@ -11,74 +11,72 @@
 ; to Common Files succeed without a second elevation. On uninstall, the bundles
 ; are removed unconditionally (harmless if the user opted out at install time).
 
-!include "nsDialogs.nsh"
-!include "LogicLib.nsh"
+!ifndef BUILD_UNINSTALLER
+  !include "nsDialogs.nsh"
+  !include "LogicLib.nsh"
 
-Var PRISM_VST_CHECKBOX
-Var PRISM_VST_STATE
+  Var PRISM_VST_CHECKBOX
+  Var PRISM_VST_STATE
 
-!macro customInit
-  ; Silent installs skip the options page, so default to installing plugins.
-  StrCpy $PRISM_VST_STATE ${BST_CHECKED}
-!macroend
+  !macro customInit
+    ; Silent installs skip the options page, so default to installing plugins.
+    StrCpy $PRISM_VST_STATE ${BST_CHECKED}
+  !macroend
 
-; NOTE on parse order: this file is `!include`d BEFORE electron-builder's
-; installer.nsi loads MUI2.nsh, so any reference to MUI macros (e.g.
-; MUI_HEADER_TEXT) MUST live inside a macro body — macro bodies aren't parsed
-; until `!insertmacro` runs them, which for customPageAfterChangeDir happens
-; from inside assistedInstaller.nsh (post-MUI2). Functions therefore go inside
-; the macro instead of at top level.
-!macro customPageAfterChangeDir
-  Page custom prismVstOptionsPage prismVstOptionsPageLeave
+  ; NOTE on parse order: this file is `!include`d before electron-builder's main
+  ; installer template, so MUI references live inside inserted macro bodies.
+  !macro customPageAfterChangeDir
+    Page custom prismVstOptionsPage prismVstOptionsPageLeave
 
-  Function prismVstOptionsPage
-    !insertmacro MUI_HEADER_TEXT "VST3 Plugins" "Choose whether to install the Prism scope plugins."
+    Function prismVstOptionsPage
+      !insertmacro MUI_HEADER_TEXT "VST3 Plugins" "Choose whether to install the Prism scope plugins."
 
-    nsDialogs::Create 1018
-    Pop $0
-    ${If} $0 == error
-      Abort
+      nsDialogs::Create 1018
+      Pop $0
+      ${If} $0 == error
+        Abort
+      ${EndIf}
+
+      ${NSD_CreateCheckBox} 0 0u 100% 12u "Install Prism VST3 plugins (recommended)"
+      Pop $PRISM_VST_CHECKBOX
+      ${NSD_Check} $PRISM_VST_CHECKBOX
+
+      ${NSD_CreateLabel} 0 22u 100% 80u "Installs the seven Prism scope plugins (Spectrum, Oscilloscope, Vectorscope, Spectrogram, VU Meter, Loudness Meter, Waveform) to:$\r$\n$\r$\n    $COMMONFILES64\VST3$\r$\n$\r$\nDAWs (FL Studio, Ableton, Logic, Reaper, etc.) will find them on the next plugin rescan.$\r$\n$\r$\nUncheck to install only the Prism desktop app. You can re-run this installer at any time to add the plugins later."
+      Pop $0
+
+      nsDialogs::Show
+    FunctionEnd
+
+    Function prismVstOptionsPageLeave
+      ${NSD_GetState} $PRISM_VST_CHECKBOX $PRISM_VST_STATE
+    FunctionEnd
+  !macroend
+
+  !macro customInstall
+    ${If} $PRISM_VST_STATE == ${BST_CHECKED}
+      DetailPrint "Installing Prism VST3 plugins to $COMMONFILES64\VST3"
+
+      ${IfNot} ${FileExists} "$INSTDIR\resources\plugins\VST3\*.vst3"
+        DetailPrint "ERROR: bundled Prism VST3 plugins were not found at $INSTDIR\resources\plugins\VST3"
+        MessageBox MB_OK|MB_ICONSTOP "Prism VST3 plugins were selected, but the bundled plugin files were not found.$\r$\n$\r$\nMissing path:$\r$\n$INSTDIR\resources\plugins\VST3" /SD IDOK
+        Abort
+      ${EndIf}
+
+      CreateDirectory "$COMMONFILES64\VST3"
+      ; xcopy /E recurse, /I treat dest as dir, /Y overwrite without prompt.
+      ; The trailing "\*" + "/E" copies each *.vst3 bundle subfolder verbatim.
+      nsExec::ExecToLog 'cmd.exe /c xcopy /E /I /Y "$INSTDIR\resources\plugins\VST3\*" "$COMMONFILES64\VST3\"'
+      Pop $0
+      ${If} $0 != 0
+        DetailPrint "ERROR: Prism VST3 plugin copy failed with xcopy exit code $0"
+        MessageBox MB_OK|MB_ICONSTOP "Prism VST3 plugin installation failed while copying files to:$\r$\n$COMMONFILES64\VST3$\r$\n$\r$\nxcopy exit code: $0" /SD IDOK
+        Abort
+      ${EndIf}
+    ${Else}
+      DetailPrint "Prism VST3 plugins: skipped (opted out)."
     ${EndIf}
-
-    ${NSD_CreateCheckBox} 0 0u 100% 12u "Install Prism VST3 plugins (recommended)"
-    Pop $PRISM_VST_CHECKBOX
-    ${NSD_Check} $PRISM_VST_CHECKBOX
-
-    ${NSD_CreateLabel} 0 22u 100% 80u "Installs the seven Prism scope plugins (Spectrum, Oscilloscope, Vectorscope, Spectrogram, VU Meter, Loudness Meter, Waveform) to:$\r$\n$\r$\n    $COMMONFILES64\VST3$\r$\n$\r$\nDAWs (FL Studio, Ableton, Logic, Reaper, etc.) will find them on the next plugin rescan.$\r$\n$\r$\nUncheck to install only the Prism desktop app. You can re-run this installer at any time to add the plugins later."
-    Pop $0
-
-    nsDialogs::Show
-  FunctionEnd
-
-  Function prismVstOptionsPageLeave
-    ${NSD_GetState} $PRISM_VST_CHECKBOX $PRISM_VST_STATE
-  FunctionEnd
-!macroend
-
-!macro customInstall
-  ${If} $PRISM_VST_STATE == ${BST_CHECKED}
-    DetailPrint "Installing Prism VST3 plugins to $COMMONFILES64\VST3"
-
-    ${IfNot} ${FileExists} "$INSTDIR\resources\plugins\VST3\*.vst3"
-      DetailPrint "ERROR: bundled Prism VST3 plugins were not found at $INSTDIR\resources\plugins\VST3"
-      MessageBox MB_OK|MB_ICONSTOP "Prism VST3 plugins were selected, but the bundled plugin files were not found.$\r$\n$\r$\nMissing path:$\r$\n$INSTDIR\resources\plugins\VST3" /SD IDOK
-      Abort
-    ${EndIf}
-
-    CreateDirectory "$COMMONFILES64\VST3"
-    ; xcopy /E recurse, /I treat dest as dir, /Y overwrite without prompt.
-    ; The trailing "\*" + "/E" copies each *.vst3 bundle subfolder verbatim.
-    nsExec::ExecToLog 'cmd.exe /c xcopy /E /I /Y "$INSTDIR\resources\plugins\VST3\*" "$COMMONFILES64\VST3\"'
-    Pop $0
-    ${If} $0 != 0
-      DetailPrint "ERROR: Prism VST3 plugin copy failed with xcopy exit code $0"
-      MessageBox MB_OK|MB_ICONSTOP "Prism VST3 plugin installation failed while copying files to:$\r$\n$COMMONFILES64\VST3$\r$\n$\r$\nxcopy exit code: $0" /SD IDOK
-      Abort
-    ${EndIf}
-  ${Else}
-    DetailPrint "Prism VST3 plugins: skipped (opted out)."
-  ${EndIf}
-!macroend
+  !macroend
+!endif
 
 !macro customUnInstall
   ; Always attempt removal — harmless RMDir if the bundle isn't there (user opted