CDE: why no icons?

Why my cde show no icons?
I have installed

X11.Dt.ToolTalk           7.1.3.15    C     F    AIX CDE ToolTalk Support
  X11.Dt.adt                 7.1.3.0    C     F    AIX CDE Application
  X11.Dt.bitmaps             7.1.0.0    C     F    AIX CDE Bitmaps 
  X11.Dt.compat              7.1.0.0    C     F    AIX CDE Compatibility 
  X11.Dt.helpinfo            7.1.1.0    C     F    AIX CDE Help Files and Volumes
  X11.Dt.helpmin             7.1.0.0    C     F    AIX CDE Minimum Help Files 
  X11.Dt.helprun            7.1.0.15    C     F    AIX CDE Runtime Help
  X11.Dt.lib                7.1.3.15    C     F    AIX CDE Runtime Libraries
                                                   (CDE) 1.0
  X11.Dt.xdt2cde             7.1.0.0    C     F    AIX CDE Migration Tool 
  X11.loc.en_US.Dt.rte       7.1.0.0    C     F    CDE Locale Configuration -
  X11.loc.it_IT.Dt.rte       7.1.1.0    C     F    CDE Locale Configuration -
  X11.msg.en_US.Dt.helpmin   7.1.3.0    C     F    AIX CDE Minimum Help Files -
  X11.msg.en_US.Dt.rte       7.1.3.0    C     F    AIX CDE Messages - U.S.
  X11.msg.it_IT.Dt.helpmin   7.1.3.0    C     F    AIX CDE Minimum Help Files -
  X11.msg.it_IT.Dt.rte       7.1.3.0    C     F    AIX CDE Messages - Italian

Did you try logging into different accounts?
Have you installed something and not booted?
When was the last time the system was booted?

Rebooted and logged in different accounts,no way

Neither using AIX nor CDE, but i had tried alot of different distros & DE/WM's.
Just asking, have you considered there might be something like a cde-icons-theme package?

I will search

Normally the icons are in /usr/dt/appconfig/icons/
under your "IT" locale.
Also check that your environment was correctly set up by the CDE session manager (the process /usr/dt/bin/dtsession):

echo $XMICONSEARCHPATH
echo $XMICONBMSEARCHPATH

I did

export PATH=$PATH:/opt/freeware/sbin:/opt/freeware/bin:/opt/IBM/xlc/13.1.0/bin:/usr/bin:/etc:/usr/sbin:/usr/ucb:$HOME/bin:/usr/bin/X11:/sbin:/usr/dt/bin:/usr/dt/sbin
export XMICONSEARCHPATH=/home/giuseppe/.dt/appconfig/icons
export XMICONBMSEARCHPATH=/home/giuseppe/.dt/appconfig/icons

Noting change
on errorlog i see

tail -f .dt/errorlog
Workspace Manager: Unable to get image SkyDark for workspace ws2.


mer ott 29 16:36:15 2014
Workspace Manager: Unable to get image Paver for workspace ws3.


mer ott 29 16:36:26 2014
Workspace Manager: Unable to read bitmap file Dtxterm.l

Don't you have the dtlogin service that provides a graphical login screen and invokes dtsession for the CDE desktop?
The dtsession will set

XMICONSEARCHPATH=/home/giuseppe/.dt/icons/%B%M.pm:/home/giuseppe/.dt/icons/%B%M.bm:/home/giuseppe/.dt/icons/%B:/etc/dt/appconfig/icons/%L/%B%M.pm:/etc/dt/appconfig/icons/%L/%B%M.bm:/etc/dt/appconfig/icons/%L/%B:/etc/dt/appconfig/icons/C/%B%M.pm:/etc/dt/appconfig/icons/C/%B%M.bm:/etc/dt/appconfig/icons/C/%B:/usr/dt/appconfig/icons/%L/%B%M.pm:/usr/dt/appconfig/icons/%L/%B%M.bm:/usr/dt/appconfig/icons/%L/%B:/usr/dt/appconfig/icons/C/%B%M.pm:/usr/dt/appconfig/icons/C/%B%M.bm:/usr/dt/appconfig/icons/C/%B
XMICONBMSEARCHPATH=/home/giuseppe/.dt/icons/%B%M.bm:/home/giuseppe/.dt/icons/%B%M.pm:/home/giuseppe/.dt/icons/%B:/etc/dt/appconfig/icons/%L/%B%M.bm:/etc/dt/appconfig/icons/%L/%B%M.pm:/etc/dt/appconfig/icons/%L/%B:/etc/dt/appconfig/icons/C/%B%M.bm:/etc/dt/appconfig/icons/C/%B%M.pm:/etc/dt/appconfig/icons/C/%B:/usr/dt/appconfig/icons/%L/%B%M.bm:/usr/dt/appconfig/icons/%L/%B%M.pm:/usr/dt/appconfig/icons/%L/%B:/usr/dt/appconfig/icons/C/%B%M.bm:/usr/dt/appconfig/icons/C/%B%M.pm:/usr/dt/appconfig/icons/C/%B

And

DTDATABASESEARCHPATH=/home/giuseppe/.dt/types,/etc/dt/appconfig/types/%L,/etc/dt/appconfig/types/C,/usr/dt/appconfig/types/%L,/usr/dt/appconfig/types/C

Is via vnc.
On hpux,via vnc i see all icons