I changed a few things to circumvent the PWS_updates problems.
When the PWS_updates script is unable to download the lates-version-list from the dashboard-webserver and the backup-webserver, a few text-lines will explain how to manually retrieve a zip and to unzip, rename and store the list.
Some users are used to use apps. They download the updates and think that the dashboard will be updated automatically.
The documentation explains now ( at least I hope so ) that they themselves have to unzip and upload the changed scripts. => https://pwsdashboard.com/documentation2012/03_updates04.pdf
Also the update script print extra lines telling to unzip and upload.
You now have to click to start the download.
Some users did not locate the downloaded file and tried to download multiple times.
Now one has to click on the link to start the download.