First of all, thanks for your help.
I've already solved the problem and it is marked as so in another thread that i opened in the codexl subforum. Here it is http://devgurus.amd.com/thread/159945.
But besides this, I could not find what you are saying, "the AMD Catalyst Driver must be12.6 or later. Catalyst 12.8 is the recommended version.". So i think AMD developers should take care of about mismatch informations. Information provided by AMD's site about opencl is very messy, in relation to software version. For example.: If one goes to http://developer.amd.com/tools/heterogeneous-computing/amd-accelerated-parallel-processing-app-sdk/d...
and try to download AMD-APP-SDK-v2.7, the Tested Drivers session recommends Catalyst. 12.04 Driver and Ubuntu® 10.0* (for my case, because i use linux/ubuntu). When one goes to http://developer.amd.com/tools/heterogeneous-computing/codexl/
the site suggests Ubuntu® 64-bit 11.10 or later. Also, there is a AMD-APP-SDK-2.7 32 bits version but CodeXL only 64?!!?!?
I installed Ubuntu 12.04 - 64 bits, as suggested in CodeXL page, and Catalyst 12.10 to test CodeXL. Result no debug at all!! So i changed to Catalyst 12.04 and now i can debug.
Thanks