The file /usr/share/texmf-site/tex/latex/biblatex/biblatex.sty installed by dev-tex/biblatex-3.0 contains the strings ‘DATE’ and ‘VERSION’ where it should have actual values. This prevents biblatex from working properly. See the URL field for details.
Created attachment 406404 [details] Error log copied from texstudio
I can confirm this bug. With dev-tex/biblatex-3.0 I get an error message for \usepackage[backend=biber,style=ieee]{biblatex} in TexStudio and in Kile See the attached error log which has been copied from TexStudio. When I switch back to version 2.9a-r1 it works again without problems.
Thanks! Should be fixed. *biblatex-3.0-r1 (12 Jul 2015) 12 Jul 2015; Manuel Rüger <mrueg@gentoo.org> +biblatex-3.0-r1.ebuild, -biblatex-3.0.ebuild: Switch back to sourceforge packages to avoid a dep on lua. See bug #554302.
thank you, now it is working for me :-).