# No room for a new \dimen when including TikZ [duplicate]

Possible Duplicate:
No room for a new \dimen

I have a fairly large document which uses 30 or so packages. I was going to add some TikZ graphics, so I added the following to my header file:

\usepackage{tikz,pgfplots}

However, this gave me a lot of errors of the type

! No room for a new \dimen .

After looking around, this seems to be related to a limitation of TeX. Is it not possible to use TikZ with many other packages? I am using MikTeX 2.9 and pdflatex.

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