Bug 497048

+++ This bug was initially created as a clone of Bug #492066 +++

ADDITIONAL INFORMATION
With a fresh download of KStars 3.7.3 on Mac OS X Monterey 12.7.6 and trying to download all the "New Data", the following items fail to download:

* Tycho-2 Star Catalog
* Inline thumbnail images
* NGC Images displayed in the details window
* IC Images displayed in the details window
* Common Images displayed in the details window

I tried to track how it all works and found the ``kstars.knsrc``. Going through this and downloading ``providers.xml`` and then ``knew stuff.xml`` I managed to find the download URLs for those 5 items. All of them can be downloaded successfully and contain the right data. I managed to put the content in place manually and it works just fine. However, I am failing to identify where the settings for the unpacking are hidden. It seems that maybe archive structures or checksum have changed?

STEPS TO REPRODUCE
1. Download KStars and install
2. Try to download all "New Data"
3. 5 items fail to install

OBSERVED RESULT

These items fail to install
* Tycho-2 Star Catalog
* Inline thumbnail images
* NGC Images displayed in the details window
* IC Images displayed in the details window
* Common Images displayed in the details window

EXPECTED RESULT

These items can be installed
* Tycho-2 Star Catalog
* Inline thumbnail images
* NGC Images displayed in the details window
* IC Images displayed in the details window
* Common Images displayed in the details window

SOFTWARE/OS VERSIONS
macOS: Monterey 12.7.6 KStars dmg