Sorry I was in holidays with no network for a few days.
As said in the answer just above, I will try to generate the exe with a 32 bit portable edition of Strawberry.

To answer your questions : we all have the same Windows, and I have installed PAR::Packer with cpan. I will try to do a new installations...

Anyway, thanks for the reply. I'll update the comment asap.

Update : I have installed a 32 bits portable edition of perl, installed PAR::Packer with cpan for this portable installation, and it works now..
I still don't understand the error which is annoying me but... It works so thank you for your help !!