[pmwiki-devel] unlink error

[Hans]

what can cause an unlink error:

Warning: unlink(wiki.d/Site/Site.AllRecentChanges) [function.unlink]: Permission denied in e:\www\softflow\farm\pmwiki.php on line 804
PmWiki can't process your request

Cannot write page to Site.AllRecentChanges (wiki.d/Site/Site.AllRecentChanges)...changes not saved

It seems to come spurious with some page change action using
UpdatePage
  

 Hans