Hi Pakled, the bucket size can be reduced to save memory and can also be set to adapt itself as needed, not sure if that option applies when rendering in a seperate process.  You can lower the bucket size in the Render editor and this does help, say if you have a bucket setting of 64MB and get an EOM you can reduce it to 32 or 16 and often FF will render.

ghonma, thanks for the additional info.  I saw the 3G and thought maybe it should be 3GB.  Definitely backed up the ini.  :O)