"Permission(s) denied" with today's update

[Philip Taylor]

Norbert Preining wrote:

> Yes, and we have mentioned this already many times.
> It is ***Winblows*** you cannot replace a file for an executable that is
> in use. Full stop. Ask the masters of Winblows why every other OS can do
> that but not Windows, till now.

OK, but why was LuaTeX open when I was running TeXworks ?  I was not compiling
anything, and had I been it would have been with the XeTeX image, not the
LuaTeX one ...

> Are you sure you removed amscls?

No, of course not.  Why would I do such a thing ?

> I would suggest:
> - tlmgr install amscls

Already done.

> - tlmgr install --reinstall luatex

Will try that next.

** Phil.