---
title: "Uniprint: Package builder does not launch."
slug: "uniprint-package-builder-does-not-launch"
updated: 2024-03-29T06:08:40Z
published: 2024-03-29T06:08:40Z
canonical: "kb.pharos.com/uniprint-package-builder-does-not-launch"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.pharos.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Uniprint: Package builder does not launch.

**Problem:**

When you try to run the Package Builder to build an Install Package you receive the below error:

***"Error while trying to execute packagecreator\PackageBuilder.exe: %1 is not a valid Win32 application"***

---

**Answer:**

This problem is known to occur under the following conditions:

1. The path to the Pharos installation contains spaces, e.g C:\Program Files\Pharos
2. A file exists that matches the path up to one of the spaces, for example C:\Program

Additionally, if an executable file exists with a similar name, for example C:\Program.exe, it will be launched instead of the package builder.

Possible workarounds include removing or renaming the offending file, or moving the Pharos installation to a path without spaces (e.g C:\Pharos).

## Related

- [Failed to retrieve printer information. Connection refused." error in Package Builder.](/failed-to-retrieve-printer-information-connection-refused-error-in-package-builder.md)
- [Uniprint Downloads](/uniprint-service-packs-and-hot-fixes.md)
- [How does the Uniprint Package Automatic Update Module work?](/how-does-the-uniprint-package-automatic-update-module-work.md)
- [Uniprint 9.2 Popup Package Controller Revision 315](/uniprint-92-popup-package-controller-revision-315.md)