Was an md5 sum provided at the download link and, if so, did the download check out OK?
If that seems OK, I suggest you contact Wolfram Support.
On Feb 4, 2013, at 10:24 PM, Didier laplot <firstname.lastname@example.org> wrote:
> I have installed the version 9.0.1 demo on Mac OS X 10.6.5 and the > application has a generic icon. I repaired permissions, rebooted, etc. > and nothing changed. I also downloaded the demo a second time in case > the first dmg archive was corrupt. > When I look into the application package, the usual icons are still there. > > Good day.
--- Murray Eisenberg email@example.com Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2838 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305