QImage (..) & QImage::save() always return NULL value - why?

[whitesail]

Hi, I'm having the following problem:

I'm creating an object

QImage image ( 10,10,32 );

QImage image ( 10,10,32 );

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And tring to save it

image.save("smth.jpg","JPG");

image.save("smth.jpg","JPG");

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image.save returns NULL - why?

Save function works for images being loaded and doesn't for those I create myself
My operating system is winXP, QT ver 3.3.3, VS.NET 2003...

Sorry if this question is too simple to be posted... still I cant find a solution.
Thanks a lot for your time.
GREG.