Hi,
For some reason the Prerequisites page is in English and Portuguese doesn't work
This is because the Setup.exe tool does not have yet a translation in Portuguese. Probably in a future version of AI the Portuguese translation will be present to.
If you are interested to provide such a translation please contact us to support at advancedinstaller dot com and we shall send you the few extra strings that need to be translated.
Regards,
Gigi
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Gheorghe Rada
Advanced Installer Team
http://www.advancedinstaller.com