For who is intrested, these are steps that solved the problem for me (there are several threads here on the forum that point to this solution, consider this as a synthesis ..., so all credits to the people that helped (thanks Robert))
I had to do a few additional tasks to get this to work:
1. Be very careful to only include references to Enterprise Library that are really needed
2. Merge Enterprise Library assemblies using ilmerge (see Reply 21 here http://forums.crystaltech.com/index.php/topic,29566.msg175721.html#msg175721, referring to http://research.microsoft.com/~mbarnett/ILMerge.aspx )
3. Update References for all generated nettiers projects to use the merged single assembly
This is a very usefull post i ever seen Thank you,
But after doing this ,break points are not working in this project
:( ;(
What can i do to get break points back