This link may help

http://www.aroma-project.org/howtos/bpmapCluster2Cdf/

also the error "invalid 'type' (list) of argument" shows that you have written something wrong in needed arguments may be the name of the chip.

I was getting the same error. Managed to fix it using groupName="Dm", at least that is for Drosophila Affy Tiling array (i.e. DM_tiling2_MR_v01). I was using groupName="DM" and the number of sequences gets to 0 and was getting this exact error message.

From the bpmapCluster2Cdf you should get groupNames. You can then choose the ones you want, i.e. not the AffxCtr ones.

Hope this helps