I found the solution, and it's something so simple...
Just reading better than I did.
Solution:
1. Install "com_comprofiler.zip" with your Joomla Control Panel.
2. You'll find the message:
Warning: file 'components/com_comprofiler pluginsfiles.tgz' still exists.
This is probably due to the fact that first installation step did not complete, or second installation step did not take place. If you are sure that first step has been performed, you need to execute second installation step before using CB. You can do this now by clicking herelink: please click here to continue next and last installation step).
3. Unzip in your own computer the "pluginsfiles.tgz" in a folder called "plugin".
4. Upload via FTP the folder "plugin" into your hosting folder, like:
/yourdomain.com/components/com_profiler/plugin.
5. Enter in your hosting control panel and delete the "pluginsfiles.tgz" file from:
/yourdomain.com/administrator/components/com_profiler/plugin.
(!) That's the clue (and my mistake). I couldn't find the file in:
/yourdomain.com/components/com_profiler/plugin.
It was in:
/yourdomain.com/administrator/components/com_profiler/plugin.
Hope it helps you.