Hello,
I can confirm this problem. The same by me !!
The .xml and .php-files are uploaded but in ext-management I see "not installed".
More than that it seems that JoomSEF is causeing a problem regarding the creation of
new locations when entering the location-management of JEvents via frontend.
I discussed this Problem meanwhile with Geraint from JEvents, we played around with lot's of
possibilities, but no (positive) result.
When disabling JoonSEF and using only Joomla SEF all works as expected.
Need help uregntly !!
Thanx in advance.