#1292 Error updating skim

[Ash]

Hi,

I've had a persistent update error. When a new version of Skim is released I am made aware by the dialog box asking if I would like to download and update (Error1.PNG). I accept and then a downloading window opens (Error2.PNG), after which I'm presented with an error box that says it couldn't be completed at this time (Error3.PNG).

This issue has followed me across a manual re-install.

I'm using Mojave 10.14.2 (18C54)
Skim is Version 1.4.36 (110)

[Ash]

Had a look at the Console.app

It seems to be failing on the TLS handshake. The error is:

error 14:52:41.758819 +1100 Skim Task <80EE5866-23B0-4CEF-AA5C-A133E951DE66>.<0> HTTP load failed (error code: -1200 [3:-9824])
error 14:52:41.758904 +1100 Skim NSURLConnection finished with error - code -1200

[Ash]

Not sure if that 80EE... etc. is some kind of key. If so please let me know how to regenerate them.

[Christiaan Hofman]

Weird, it did work for me. Perhaps sourceforge.net substituted a wrong
mirror URL.

[Christiaan Hofman]

I think the problem resides with sourceforge. I've had failures of their secure connections before, and it recently had problems getting its mirrors synchronised. Probably better to fail a secure connection than making the connection unsecure.

[Ash]

Perhaps, but it's a persistent problem. I manually updated to the latest version a few months ago after the auto-update failed and now it's failing again. This is not just a simple case of a singular failure. Something is systematically wrong in the update procedure.

[Christiaan Hofman]

Very strange. I don't see what we could do about this, especially as I cannot reproduce the problem.

[trigger08]

I see the current theory is this is a SourceForge problem, just wanted to chime in that I've been having the exact same issue for a few months and have been downloading the update dmg's directly as a workaround.

[Masahiro Nakamura]

environment: macOS Mojave 10.14.6, Skim 1.5.5(121)
I failed updating too.
After pressing Install Update, I got update error.
Following is Console.app error logs which log title is Skim (Sparkle).

Error   08:07:59.857449 +0900   Skim    Error: An error occurred while downloading the update. Please try again later.(null) (URL https://nchc.dl.sourceforge.net/project/skim-app/Skim/Skim-1.5.6/Skim-1.5.6.dmg)

Error   08:07:59.857485 +0900   Skim    Error: An SSL error has occurred and a secure connection to the server cannot be made. (null) (URL https://nchc.dl.sourceforge.net/project/skim-app/Skim/Skim-1.5.6/Skim-1.5.6.dmg)

Error   08:07:59.860828 +0900   Skim    Error: Operation could not be completed.（kCFErrorDomainCFNetworkError-1200） (null) (URL (null))

I can download Skim-1.5.6.dmg from https://nchc.dl.sourceforge.net/project/skim-app/Skim/Skim-1.5.6/Skim-1.5.6.dmg by Safari or curl -O.
I wonder if this prombem is related to App Transport Security (ATS).

[Masahiro Nakamura]

Today I was able to download and install update...