diff --git a/build/jenkins/zip b/build/jenkins/zip
index 413c82c..1799eb2 100644
--- a/build/jenkins/zip
+++ b/build/jenkins/zip
@@ -54,7 +54,7 @@ pipeline {
 
 
                         // Use a powershell step to check for existing zip, or create a new one, then output the filename
-                        // Capture the output of the powershell script
+                        // Capture the output of the powershell script, redirecting stderr to stdout
                         def zipFilenameOutput = powershell returnStdout: true, script: '''
                             $ErrorActionPreference = "Stop" # Stop the script on any error
 
@@ -166,12 +166,19 @@ pipeline {
                             Write-Output $zipFilename
 
                             exit 0
-                        ''' // End powershell script
+                        ''' 2>&1 // End powershell script and redirect stderr to stdout
 
                         // Capture the output and set the environment variable
                         // The PowerShell script outputs the zip filename as the last line
-                        env.CREATED_ZIP_FILENAME = zipFilenameOutput.trim()
-                        echo "Set CREATED_ZIP_FILENAME environment variable to: ${env.CREATED_ZIP_FILENAME}"
+                        // Use readLines() to handle multi-line output and get the last line
+                        def outputLines = zipFilenameOutput.readLines()
+                        if (!outputLines.isEmpty()) {
+                            env.CREATED_ZIP_FILENAME = outputLines.last().trim()
+                            echo "Set CREATED_ZIP_FILENAME environment variable to: ${env.CREATED_ZIP_FILENAME}"
+                        } else {
+                             error "PowerShell script did not produce any output to capture the zip filename."
+                        }
+
 
                     } // End dir block
                 }
@@ -194,6 +201,7 @@ pipeline {
                              archiveArtifacts artifacts: "${createdZipFilename}", fingerprint: true
                              echo "Archive step completed."
                          } else {
+                             // This error should now be less likely with improved output capturing
                              error "CREATED_ZIP_FILENAME environment variable was not set or was empty. Cannot archive."
                          }
                      } // End dir block