I now have the reason behind those problems. Office 365, which contains A2013, is causing the problem. It has to be used connected to the web to get any help, that is rotten anyway - most of the time I have to search the web to get MSN descriptions.
A2013 is made to use web data files. It is a very limited version of Access: no automation, no Activex controls and last but not least no treatment of report events...
No one at MS could deal (even understand) the problem (approx. 15 phone calls): it's Gina who did the job.
Now, I am trying to get back to A2007 but MS cancelled my product ID!!!!
So before switching to Office 365 thing twice: you may not get what you are expecting. Oh, one more point: to realize that you have been screwed you need to use it,don't forget that there is no refund on a package that has been used even only once...