diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index ffc759a..137af1a 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -269,12 +269,18 @@ jobs:
           set -e
           echo "status=${status}" >> "${GITHUB_OUTPUT}"
 
-      - name: Finalize Zsh Syntax Result
+      - name: Run Zsh Regression Tests
+        id: zsh_tests
+        if: steps.zsh_syntax.outputs.status == '0'
+        run: zsh tests/installomator-label-parser.zsh
+
+      - name: Finalize Zsh Validation Result
         if: success() || failure()
         shell: bash
         run: |
           target_count="${{ steps.collect_targets.outputs.count }}"
           syntax_status="${{ steps.zsh_syntax.outputs.status }}"
+          tests_outcome="${{ steps.zsh_tests.outcome }}"
 
           if [[ "${target_count}" == "0" ]]; then
             {
@@ -286,19 +292,20 @@ jobs:
           fi
 
           {
-            echo "### Zsh Syntax"
+            echo "### Zsh Validation"
             echo
             echo "- Files scanned: ${target_count}"
+            echo "- Regression tests: ${tests_outcome}"
           } >> "${GITHUB_STEP_SUMMARY}"
 
-          if [[ "${syntax_status}" == "0" ]]; then
+          if [[ "${syntax_status}" == "0" && "${tests_outcome}" == "success" ]]; then
             echo "" >> "${GITHUB_STEP_SUMMARY}"
-            echo "✅ All zsh files passed \`zsh -n\`" >> "${GITHUB_STEP_SUMMARY}"
+            echo "✅ Zsh syntax and regression tests passed" >> "${GITHUB_STEP_SUMMARY}"
             exit 0
           fi
 
           echo "" >> "${GITHUB_STEP_SUMMARY}"
-          echo "❌ zsh syntax errors found" >> "${GITHUB_STEP_SUMMARY}"
+          echo "❌ Zsh validation failed" >> "${GITHUB_STEP_SUMMARY}"
           exit 1
 
   shellcheck:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b2b9a9b..68b90cb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,8 @@
 
 All notable changes to this project are documented in this file.
 
-## 1.2.0b2 - 18-Aug-2026
+## 1.2.0b3 - 18-Aug-2026
+- Fixed validation of Installomator labels declared in multiline alias arms (Bug Report #16)
 - Added `selectionDialogDefaultChecked` to configure default selection for interactive-mode items (while keeping already-installed items disabled and unchecked; thanks for FR #14, @jeffmw777!)
 - Updated `codex` Validation Path
 
diff --git a/README.md b/README.md
index a0a8c0e..b7b583c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/Setup-Your-Mac/SYM-Lite?display_name=tag) ![GitHub issues](https://img.shields.io/github/issues-raw/Setup-Your-Mac/SYM-Lite) ![GitHub closed issues](https://img.shields.io/github/issues-closed-raw/Setup-Your-Mac/SYM-Lite) ![GitHub pull requests](https://img.shields.io/github/issues-pr-raw/Setup-Your-Mac/SYM-Lite) ![GitHub closed pull requests](https://img.shields.io/github/issues-pr-closed-raw/Setup-Your-Mac/SYM-Lite) [![swiftDialog](https://img.shields.io/badge/swiftDialog-Enabled-blue)](https://swiftdialog.app) [![Semgrep Security Scan](https://img.shields.io/badge/security%20scanned%20by-Semgrep-00C7B7?style=flat&logo=semgrep&logoColor=white)](https://semgrep.dev)
 
-# SYM-Lite (1.2.0b2)
+# SYM-Lite (1.2.0b3)
 
 > **SYM-Lite** is a lean, purpose-built script for executing MDM-agnostic [Installomator labels](https://github.com/Installomator/Installomator/tree/main/fragments/labels) and [Homebrew](https://brew.sh) casks / formulas, as well as Jamf Pro-specific [policy triggers](https://learn.jamf.com/r/en-US/jamf-pro-documentation-current/Triggers_for_Policies), all through a unified [swiftDialog](https://swiftdialog.app) selection and reporting interface.
 
@@ -71,7 +71,7 @@ installomatorLabels=(
 )
 ```
 
-At runtime, SYM-Lite validates each configured label against `organizationInstallomatorFile` before building the picker or accepting silent-mode CSV input. If a label is missing from that Installomator file, or if the Installomator file is unavailable or unreadable, SYM-Lite logs a warning or error and removes Installomator labels from the current run while leaving other item types available.
+At runtime, SYM-Lite validates each configured label against single-line and continued top-level alias arms in `organizationInstallomatorFile` before building the picker or accepting silent-mode CSV input. If a label is missing from that Installomator file, or if the Installomator file is unavailable, unreadable, or cannot be parsed, SYM-Lite logs a warning or error and removes Installomator labels from the current run while leaving other item types available.
 
 ### Adding Homebrew Items
 
@@ -341,6 +341,6 @@ swiftDialog's [Inspect Mode](https://swiftdialog.app/advanced/inspect-mode/) use
 
 (The rest of the document — Logging, Troubleshooting, Testing Checklist, Next Steps, and Support — remains unchanged as the reordering was already applied where relevant.)
 
-**Version:** 1.2.0b2
+**Version:** 1.2.0b3
 **Date:** 18-Aug-2026  
 **Author:** Dan K. Snelson (@dan-snelson)
diff --git a/SYM-Lite.zsh b/SYM-Lite.zsh
index 9462d24..033fb0c 100644
--- a/SYM-Lite.zsh
+++ b/SYM-Lite.zsh
@@ -16,7 +16,8 @@
 #
 # HISTORY
 #
-# Version 1.2.0b2, 18-Aug-2026, Dan K. Snelson (@dan-snelson)
+# Version 1.2.0b3, 18-Aug-2026, Dan K. Snelson (@dan-snelson)
+# - Fixed validation of Installomator labels declared in multiline alias arms (Bug Report #16)
 # - Added `selectionDialogDefaultChecked` to configure default selection for interactive-mode items (while keeping already-installed items disabled and unchecked; thanks for FR #14, @jeffmw777!)
 # - Updated `codex` Validation Path
 #
@@ -35,7 +36,7 @@ setopt NONOMATCH
 setopt TYPESET_SILENT
 
 # Script Version
-scriptVersion="1.2.0b2"
+scriptVersion="1.2.0b3"
 
 # Script Human-readable Name
 humanReadableScriptName="Setup Your Mac Lite: Developer Edition"
@@ -516,6 +517,7 @@ function getAvailableInstallomatorLabels() {
         BEGIN {
             inLabelCase = 0
             caseDepth = 0
+            continuedArm = ""
         }
 
         /^[[:space:]]*case[[:space:]]+\$label[[:space:]]+in[[:space:]]*$/ {
@@ -525,6 +527,31 @@ function getAvailableInstallomatorLabels() {
         }
 
         inLabelCase {
+            if (continuedArm != "") {
+                if (caseDepth != 1) {
+                    exit 2
+                }
+
+                if ($0 ~ /^[[:space:]]*[A-Za-z0-9_*][A-Za-z0-9_|-]*\|\\[[:space:]]*$/) {
+                    labelFragment = $0
+                    sub(/^[[:space:]]*/, "", labelFragment)
+                    sub(/\\[[:space:]]*$/, "", labelFragment)
+                    continuedArm = continuedArm labelFragment
+                    next
+                }
+
+                if ($0 ~ /^[[:space:]]*[A-Za-z0-9_*][A-Za-z0-9_|-]*\)[[:space:]]*$/) {
+                    labelFragment = $0
+                    sub(/^[[:space:]]*/, "", labelFragment)
+                    sub(/\)[[:space:]]*$/, "", labelFragment)
+                    print continuedArm labelFragment
+                    continuedArm = ""
+                    next
+                }
+
+                exit 2
+            }
+
             if ($0 ~ /^[[:space:]]*case[[:space:]].*[[:space:]]+in[[:space:]]*$/) {
                 caseDepth++
                 next
@@ -538,6 +565,13 @@ function getAvailableInstallomatorLabels() {
                 next
             }
 
+            if (caseDepth == 1 && $0 ~ /^[[:space:]]*[A-Za-z0-9_*][A-Za-z0-9_|-]*\|\\[[:space:]]*$/) {
+                continuedArm = $0
+                sub(/^[[:space:]]*/, "", continuedArm)
+                sub(/\\[[:space:]]*$/, "", continuedArm)
+                next
+            }
+
             if (caseDepth == 1 && $0 ~ /^[[:space:]]*[A-Za-z0-9_*][A-Za-z0-9_|-]*\)[[:space:]]*$/) {
                 labelArm = $0
                 sub(/^[[:space:]]*/, "", labelArm)
@@ -545,6 +579,12 @@ function getAvailableInstallomatorLabels() {
                 print labelArm
             }
         }
+
+        END {
+            if (continuedArm != "") {
+                exit 2
+            }
+        }
     ' "${organizationInstallomatorFile}"); then
         return 1
     fi