diff --git a/Bookworm-Setup.exe b/Bookworm-Setup.exe
index 7e88ccf..57cc926 100644
Binary files a/Bookworm-Setup.exe and b/Bookworm-Setup.exe differ
diff --git a/auto-setup.ps1 b/auto-setup.ps1
index c99ac6b..20752cd 100644
--- a/auto-setup.ps1
+++ b/auto-setup.ps1
@@ -810,7 +810,8 @@ $sentinelEnd
         try {
             if (-not (Test-Path $t.Dir)) { New-Item -ItemType Directory -Path $t.Dir -Force -EA Stop | Out-Null }
             $psProfilePath = Join-Path $t.Dir $t.File
-            $existing = if (Test-Path $psProfilePath) { Get-Content $psProfilePath -Raw -Encoding UTF8 } else { "" }
+            $existing = if (Test-Path $psProfilePath) { (Get-Content $psProfilePath -Raw -Encoding UTF8 -EA SilentlyContinue) } else { $null }
+            if (-not $existing) { $existing = "" }
             # 同时清理 v3.0.11 旧 sentinel (BW_CRED_START v3.0.11 ...)
             $oldPattern = "# BW_CRED_START v3\.0\.\d+[\s\S]*?# BW_CRED_END"
             $existing = [regex]::Replace($existing, $oldPattern, "")