[Tikzdevice-bugs] Question about warnings

[Lorenzo Isella]

Dear All,
I am running tikzDevice 0.5.2 + R 2.11 on my machine (Ubuntu 10.04, 
amd64 architecture).
When running an unmodified script of mine, I now get plenty of warnings 
of this kind



Warning messages:
1: running command '/usr/bin/pdflatex -interaction=batchmode 
-output-directory /tmp/RtmpKxIs1N 
/tmp/RtmpKxIs1N/tikzStringWidthCalc.tex 2>/dev/null' had status 1


Is it anything I should worry about?
Cheers

Lorenzo