I found a workaround,
I can not really understand why I have this issue but let me explain what I did to overcome the situation for the moment.
The thing is very strange:
M4L (or ableton) seems that at a certain point it saved into the Ableton Live Set some EMPTY presets :-(
Even though I reload the presets files that I previoulsy saved... each time I quit ableton live.. re open ableton live.. my presets were empty!
The only way to overcome this situation was to reopen my preset file, re STORE all my presets .. Save Ableton Live Set once more and then it worked... (next time I open ableton live, the presets appears fine, automatically reloaded)
hum...
Anyhow, thanks a lot for spending the time to try to test and solve my "mini" patch! cool!
:-)
what is strange is that, M4L, should save the presets within