[R] Saving R graphics with version 2.3.1

[ilka at dpi.inpe.br]

HI !

I´ve installed the latest R version (2.3.1) and I´ve had problems to 
save my graphics as JPEG, PNG and the others available formats.
R saves the file with no extension. Then, I have to open this file 
using an image visualizer and save it as PNG, for instance.

Previous R versions work without problems.

Has everyone had a similar problem?
Is it a bug of R 2.3.1?

Thanks in advance.


Ilka Afonso Reis