Choppin

I know this is a bit late but:
 
I'm not sure if this will help if you store everything as All files.  But, if you have many different tone, phrase, sequence, stage settings etc.  type files, then you can create packages in the Data Editor that will group the things you want to together or loaded into the various sections (tone, stage setings, phrase) of the PX-5s without having to load or save everything like you do with an All file.
 
This is only useable through the data editor.  What it would allow you to do, for example, would be to create a package that contains several different tones, maybe a couple of stage settings, maybe a phrase or two, maybe a sequence in whatever combination and assigned to whatever user slot you want.  You can create several of these packages that organize the types of data you have however you want.  You then transfer the package to the PX-5s and it wil affect only those things that you wanted to load.
 
 
 

I think the PX is using this for Hi-Res velocity

Because there is a great deal of flexibility and complexity in the way the PX-5s can have it's zones layered, there isn't a dedicated split control.  Check out the video in the attached link.  Pay special attention or jump to 20:47 where splits are talked about:
 
 
https://www.youtube.com/watch?v=hActS4FYS1Q&feature=player_detailpage&list=UULTxWn38YhMWYwVjVs0n_qQ

On boot up, the PX detects the pedal's polarity automatically to allow the use of different types of sustain pedals.  If you pressed it while it was booting, it may read it reversed.  Best not to touch anything while the machine boots.

Did you try setting the bars 1 and 8.  If it's 8 bars the count is 1,2,3,4,5,6,7,8 if you do 9 the ninth would likely be blank.

Hi,
 
Try setting min to 0 and max to 127

leeskeys,
 
Make sure the USB out under Sys Settings > Midi is set to keyboard and also make sure it is on. Make sure you are not in an Edit mode or parameter change mode  on the keyboard before starting the Data editor.  If none of this makes any difference, what computer and what operating system are you using?  What USB port are you using 2.0, 3.0?  While connected in the exact same way, can you communicate to any other midi programs on the computer?  Do you have a midi program running that is using the casio port (a vst program or something) at the same time you are trying to run the editor?
 
If you can connect and use other midi programs with the Px-5s while connected to the exact same port, then try uninstalling and reinstalling the editor.