Hi Richard
The Samplers apply an octave offset to whatever Soundfont is being played which allows you to use the 'octave up/down' keys for each Keygroup to change the octave in which you are playing. The octave information starts in the Keygroup you are playing on and flows downstream to the sampler where it is read and modified. The 'octave up/down' keys change the octave settting in the Keygroup not the sampler, a fact worth remembering as it can be confusing - if you use the 'octave up' buttton while playing one instrument, you will in normal circumstances find that when you change the instrument on that Keygroup you are also playing that new instrument an octave up.
This is a sensible behaviour if you are playing a 'Cello, for example, but can be confusing when you are playing a sound (as seems to be in your case) where the samples are deliberately different for each note (often the case is percussion sample sets as well). There is an added complexity in that each instrument (in it's internal Scaler that adds tuning information) can apply an 'octave offset' to the incoming octave. This is usually used to set the octave, for example, of a bass guitar to be lower than that of a violin, and I think that it is probably this offset that is leading to your confusion here.
EigenD is actually very flexible about this behaviour, and you can configure it to pretty much do whatever you want. In your case I suspect that you want to keep allyour samplers at one fixed octave, to help you make your soundfonts in a simpler manner, and to make it irrelevant which particular sampler they are loaded into. To turn off all the Sampler octave offsets it is easiest to use the Commander (available in the 1.1 software series in the main application menu). Open it and type or play:
all scaler hey
all relative octave to 0 set
then save your setup (giving it a new name).
This will make all the samplers share the same octave when you run that setup, which you can then shift up and down by using the octave up/down keys for the keygroup. You will find that some of your other instruments (if you're using them at all) now have inconvenient octaves. You can move their relative octaves up and down to suit by saying things like
scaler X hey
relative octave up
or scaler X hey
relative octave down
where 'X' is the number of the scaler in the instrument you want to change. You can find out which scaler is used in which instrument here for the Pico , and here for the Alpha.
I hope that helps - give it a go and we're always here if you need further answers...
John