problem with acrobat7

[Filippo Moretti]

After portupgrading acrobat7 I get the following error
filippo at sting /usr/X11R6/Adobe/Acrobat7.0/ENU/bin]$ ./acroread
The OS named  FreeBSD version 6.1-PRERELEASE is currently not installed.
Try running on an installed platform and connecting to your display.
Installed platform(s) include the following:
 Intel/Linux

any help appreciated
sincerely
Filippo Moretti