[OS X TeX] TLU critical update failure

[Richard Koch]

Murray,

The problem occurred because tlmgr itself was updated. There are two ways
that such an update can be installed. The easy way is the command

	sudo tlmgr update --self

But an even safer method, if tlmgr gets hopelessly mangled, is to update it
using a TUG script called update-tlmgr-latest.sh.

Since Adam Maxwell is a meticulous programmer, he selected the second method
to use in TeX Live Utility when a tlmgr update is required. 

Unfortunately, it is now clear that update-tlmgr-latest.sh is broken on Macs.
This is being debugged by experts, and it may take a while to fix. Note that
there is nothing wrong in TLU; the bug is in a TUG script which TLU calls.

The command "sudo tlmgr update --self" ONLY UPDATES the tlmgr code.
It does not continue to update TeX Live. This command works fine currently.

Thus you can safely call 

	sudo tlmgr update --self

After that call, TLU will work and you can continue to update as usual.

Dick