Installation stoped

Hello.In my PC (w2k adv. server SP4) I had installed Domino 6.5 and Notes with designer and admin 6.5.

Now I want to upgrade this configuration with R7.

I have no problems with server upgrade, this is working now, but when I try to install the client the wizard stop and say that it can not upgrade the system.

What can I do?

Thank you in advance and sorry for my english.

Guillermo

Subject: problem solved

I changed the international configuration from Español(Argentina) to Español(Mexico) and the installer worked ok