Imaging Engine handles temporary files on the path \Esko\bg_data_pixelmachinectp_vXXX\DRIPDIR. Can I change this path to a different one, i.e. on a different drive?
No, it's not possible to change the folder where Imaging Engine handles its temporary files. The only way make it handle these files on a different drive is to completely install Imaging Engine on that drive.
Allowing this is on the ToDo-list for the Imaging Engine team (together with other configuration settings), but no planned release date yet.