My problem is very similar to jiawen's posted on 2017 September 14 12:49:24.
I copied his text (Thank you, jiawen, for writing it so precisely)
with minor modifications to describe my situation.
(difference on OS, etc.)
When I start PixInsight, I get this popup within the program:
"You have 14 PixInsight updates
Click here to select, download and install available PixInsight updates."
If I click there to download the updates, the downloader works, and then suggests restarting PixInsight:
"Packages downloaded:
14 successful
0 failed
Downloaded packages are now scheduled for installation.
The updates will be installed when you exit this instance of the PixInsight Core application.
Should you need to cancel the scheduled update, you can do so by selecting Resources > Update > Unschedule Update Installation."
When I close the program, I get this popup:
"Update packages have been scheduled for installation.
Do you want to install the updates now?"
[X] Restart PixInsight
([X] is actually a little checkbox, checked, next to the option "Restart PixInsight".)
However, when I restart the program, I get the same "You have 14 PixInsight updates" message. The updates aren't actually updating/installing.
How do I fix this? I'm using PI ver.01.08.05 64bit under Windows 8.1. on my Surface Pro 3.
I also use it on my MacBook Air under High Sierra, and it runs perfectly.
Thank you.