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In a document of mine I'm trying to use the external library. For the record, I downloaded the CVS version of TikZ, since I want the better update checks. Anyway, I have a figure in my code which compiles perfectly as long as I have \tikzset{external/export next=false} in front of it; that is, the figure's code is correct. However, once I change the value to true, then I get the following error (I hope this is indeed the relevant part):

Runaway argument?
{ \clip (-3,-2) rectangle (4,3); \draw [thick,gray,->] (-2.5,0) -- (3\ETC.
./figures/region-bounded-by-hyperbolas.tex:83: Paragraph ended before \tikzexternal@externalizefig@systemcall@uptodatecheck was complete.
<to be read again> 
l.83 \end{tikzpicture}

./figures/region-bounded-by-hyperbolas.tex:83:  ==> Fatal error occurred, no output PDF file produced!

When using the 2.10 version this seems to work fine for both boolean values - unfortunately then the update method is poor.

Is this a bug? Am I doing something wrong? How can I debug/troubleshoot this?

Edit 1: I just installed an even newer version of TikZ, 4.8.2012 (following the suggestion here), and everything seems to work as expected. Thus, it seems like the issue I experienced was a bug. In case no further insights are provided, then I'll flag to close this questions

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closed as too localized by Christian Feuersänger, percusse, Tom Bombadil, Dror, diabonas Aug 25 '12 at 9:37

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

There has been a bug in some CVS version which has been fixed shortly afterwards. I would suppose that you ran into it. – Christian Feuersänger Aug 24 '12 at 21:06