The Catalogue Downloader is a companion application that comes automatically with CET. While it runs separately from CET, it manages all catalogue downloads and keeps your files organized. It lets you view catalogue details, track download progress, and pause, resume, or retry individual downloads. You can also access recently completed or on-demand catalogues. By ensuring the right files are available when you need them, the Catalogue Downloader helps prevent errors, save time, and maintain a smooth workflow.

Open the Catalogue Downloader within CET via the Menu bar icon next to Toggle Tools or from the Windows System Tray.

The following table lists the available icons and their corresponding statuses as they appear in the Menu bar:

Icon	Status
	No downloads in progress
	Downloading
	Download(s) failed
	Download(s) paused
	Not running

Navigating the Catalogue Downloader

Use the numbers in the interface image to correlate each function with the descriptions below.

1. Pause
   Click to pause or resume catalogue downloads listed as In Progress.
2. In Progress
   Displays catalogues currently being downloaded. Click the arrow to expand or collapse the list. Drag the icon to rearrange the downloading order.
3. On Demand
   Allows you to organize the download order of catalogues in the In Progress section.
4. Recently Completed
   Displays catalogues that have finished downloading. Click the arrow to expand or collapse the list.
5. Info
   Displays download information, including the number of catalogues remaining, download speed (MB/second), and number of failed catalogues. When a catalogue is selected, this section also shows the catalogue status, time started, total file size, and an Open Folder link.
6. Sync Cycle
   The Sync Cycle is the process where the system automatically checks for, retrieves, and applies any new or changed data from the central catalogue server to your local catalogue. This section shows the current sync progress and the time of the most recent completed sync.
7. Ellipses Menu (...)
   Provides access to the following options:
   • Settings (see below for details)
   • Open Catalogues Folder: opens the folder where downloaded catalogues are stored
   • Open Logs Folder: opens the folder containing log files for troubleshooting
   • Contact Support: opens an email or support request form to reach technical support
   • Report Issue: opens a window to report bugs or other issues with the Downloader
8. Help Icon (?)
   Opens the Help window with additional guidance and reference material.
9. Catalogue Tooltip
   Hover over a catalogue to view a tooltip with details and download progress.

Settings Options

• Run without CET 

  • When enabled: Catalogues can continue syncing and downloading in the background after CET is closed.

  • When disabled (default): The downloader will stop once CET is closed. Catalogue syncing will resume the next time you launch CET.

• Limit downloader bandwidth consumption enables limiting the amount of network bandwidth the Downloader uses. This allows other internet activities to continue without slowdown.
• Detailed logs enables logging of all download activity, including errors and retries. Logs can be viewed or exported for troubleshooting purposes.
• Show on demand allows you to organize the download order of catalogues in the In Progress section.
• Clear SHA256 cache files removes all temporary catalogue files stored by the Downloader which could potentially resolve issues with corrupted downloads.