AirPort Utility 5.6 for OS X Lion will run on Lion 10.7.1 and 10.7.2, but not higher versions....and I notice that you have 10.7.5 listed in your profile.
Please check this Apple support document to confirm. In particular, check the System Requirements
Your Time Capsule will run just fine with AirPort Utility 6.x.....which is included in Lion 10.7.5, Mountain Lion and Mavericks.
If you have a "new" Time Capsule, you must use AirPort Utility 6.x to install the device.
Thanks Bob. Then my real problem is that the amber ligth wont stop blinking. My Mac cant detect any Airport Base Station so I can configure it for the first time. Afer reading all the solutions in the instalattion guide my last option was that i had to use the Airport Utility 5.6 so now i dont know why my mac wont detect de airport base station.
When I run the airport utiliy it says its conected to the internet, but cant detect any other wifi devices, like my base station. I already tried disconecting the base, unplugin and plugin againt the ethernet cable.
To avoid confusion, I suggest that we start over again at a logical place.....the beginning.
Is this a new Time Capsule....the one that looks like a tower?
Are you trying to connect your Time Capsule to your modem using an Ethernet cable?
What is the make and model number of your modem?
What is your networking goal for the Time Capsule on your network? Or, more simply, what service do you want the Time Capsule to provide?
Are you still using Lion (10.7.5) as you indicate in your profile, or have you updated to Mountain Lion or Mavericks?
Thanks. Please review my post above to see that we asked five basic questions.
Looks like we got two answers.
Can you please provide answers to the other questions that we asked?
1) Are you trying to connect your Time Capsule to your modem using an Ethernet cable?
2) What is the make and model number of your modem?
3) Are you still using Lion (10.7.5) as you indicate in your profile, or have you updated to Mountain Lion or Mavericks?
I understand that things appear clear to you there, but we cannot read your mind or see your network, so we only know as much about your problem and your network as you can tell us.