[Plugin: bib3html] Could not find the bib­li­og­ra­phy file(s)

[Could not find the bib­li­og­ra­phy file(s)]

when I enter a remote address such as

[bibtex file="http://www.citeulike.org/bibtex/user/ejmeij"]

http://wordpress.org/extend/plugins/bib3html/