Cygwin update hanging on mingw-runtime

["Michael Ash" <mash at econs dot umass dot edu>]

We are attempting to use setup.exe to update our previously working
Cygwin installation.  The download completes but the installation
hangs at 25% on the following:

Installing
mingw-runtime-3.12-4
/usr/include/mingw/assert.h

After half an hour hanging at this point, the following appear in a Windows box:

"Dr. Watson Postmortem Debugger has encountered a problem and needs to
close.  We are sorry for the inconvenience.  If you were in the middle
of something, the information you were working on might be lost."

The error report gave the following information, in case it's of any use to you:

EventType: BEX
P1: drwtsn32.exe
P2: 5.1.2600.0
P3: 3b7d84a2
P4: dbghelp.dll
P5: 5.1.2600.2180
P6: 4110969a
P7: 0001295d
P8: c0000409
P9: 00000000

At this point, the screen is frozen, and the Task Manager indicates
that the Cygwin installation is not responding.


I have a couple of suspicions:
(1) I also installed MINGW directly on the computer.  Maybe the
Cygwin/MINGW and the main MINGW are interacting badly.
(2) Maybe there Cygwin services running that are interfering with the
update.  We used cygrunsrv to stop sshd which was the only service
that we thought we were running.
(3) We have occasionally used the command-line program cyg-apt to
update and install.  Maybe this has fouled the database.


Our failed update seems to have messed up other parts of cygwin.  We
can no longer start sshd with 'cygrunsrv --start sshd'  and we can't
seem to locate ssh-host-config

We have attempted to select "skip" for mingw in setup.exe, but this
doesn't affect the hang described above.

Advice welcome.

Best,
Michael

--
Michael Ash, Associate Professor
 of Economics and Public Policy
Department of Economics and CPPA
University of Massachusetts

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