[NTG-context] Update failure: I'm losing my mind

MiKTeX. I've done this half a dozen times. This time it doesn't work. I feel stupid. What have I forgotten? Things were working perfectly. I decide to update, so I download cont-tmf.zip to \localtexmf. Then I unzip, overwritting all the old files. Then I update the database either using mktexlsr or the MiKTeX options wizard. But now texexec can't find texexec.ini. But it's there, in \localtexmf\context\config (as well as \texmf\context\config) BTW, if I execute kpsewhich texexec.ini it returns without an error, but also with no information. Is that right? -gary