Thanks: a fresh UserDir solved it. I'm not sure exactly what the problem was in my 2.2-friendly UserDir... I have tested various files from it into the new Userdir without being able to replicate the problem (but the problem is still there with my 2.2-Userdir) so unfortunately I can't tell you exactly what was not compatible.
In the end, I have done a bunch of copying and manual tweaking of files (bind and ui and preferences) from my old Userdir into the new one--- a bit painful, but never mind--- and now seem to have Lyx 2.3.0 working nicely. And it is very nice! > On 07/12/2018 08:44 PM, [email protected] wrote: > > With newly installed (upgraded) Lyx 2.3.0, whenever I try to add a Biblatex > > bibliography, I am getting this error box: > > > > Lyx: package not available > > The cite engine biblatex requires a package that is not available ... or a > > converter that you have not installed... > > Missing prerequisites: biblatex.sty > > ... > > > > [Riki Heck wrote:] > One suggestion would be to try with a fresh user directory. It's > possible there's something in the one you have that's left over from the > previous biblatex hackery. > > > Background: I've just updated to Lyx 2.3.0 via the Windows installer (for > > which, many thanks). A key reason for me to upgrade is the native Biblatex > > support. With Lyx 2.2, I got Biblatex working fine via the tricks described > > in the Lyx Wiki--- so my system is/was basically OK I reckon. But I can't > > get biblatex biblios going with Lyx 2.3.0. > > > > [snip] > > > > - The exact same issue has occurred on my two machines where I've just > > upgraded to Lyx 2.3. In one case, I did a complete Miktex reinstall *after* > > installing Lyx 2.3, but in the other I used my previous Miktex. Since I > > already had working Miktex 2.9 with Lyx 2.2, I used the Installer > > "LyX-230-Installer-6.exe", not the Bundle (then, on one machine, I > > re-installed Miktex directly). > > FYI, this is not the official installer. It's similar to that one, but > not quite the same. > > > - Tools->Tex_Information->Latex_styles does show "biblatex.sty". There are > > lots of entries in the "Biblatex citation styles" and "Biblatex > > bibliography styles", too. > > Weird. That means LyX should know you have that package. > > One suggestion would be to try with a fresh user directory. It's > possible there's something in the one you have that's left over from the > previous biblatex hackery. But it's hard to know. > > Riki > >
