PS-CS2 & HDR woes

I have been attemptng to do an HDR merge of a set of three images shot using exposure bracketing to capture the widest possible DR for teh scene.

Each raw image can be opened using ACR, and is error free.

When I select two or more using the HDR function in CS2, it starts to process, opens all files, churns along like it is building an HDR image, then halts with an error indicating "insufficient storage".

This on a machine with 2GB of RAM, and PS scratch disks pointed to a raid drive with 720GB free.

I suspect I am not "out of storage", but have a parameter set wrong somewhere in the PS settings.

Any suggestions where to start looking?

Just for trivia,
Try running HDR from Bridge (having selected the desired images), after bridge is done doing its annoying long preview thing. Bridge sucks up system resources until it is done creating thumbnails, metadata and previews preventing several other things from running.

And I thought you had to have a minimum of 3 images selected, but have not tried with less then 5 yet.

Just in case you don't know how to do from bridge - select tools, photoshop, HDR

Thanks for that tip. I'll give it a go from bridge and see if that changes anything.