Bibliography error: "Use of \blx@bbl@verbadd@i doesn't match its definition. \verb"

This bug is now fixed in biblatex: if you are experiencing it you should update your TeX system.

Following text is retained for historical record.

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This is a bug in the BibTeX support for biblatex and is already fixed in the development version. As a temporary fix, adding

\makeatletter
\def\blx@maxline{77}
\makeatother

after loading biblatex should work (after LaTeX/BibTeX/LaTeX).

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The detail is that in order to update the BibTeX support to bring it into line with Biber, some additional items had to be added to the .bbl file BibTeX produces. This alters an indent, which needs to be set to correctly write verbatim material. Unfortunately I overlooked that in the earlier update.