Cannot edit text or any command other than print in Adobe Acrobat 9.0.1 Pro. Receive error message

Question

I just installed adobe acrobat 9.0.1 Pro and it opens up pdfs and prints fine but when I try to edit text or enter any other command I get an error and it gives the option of cancel to debug or to exit program.
Error message:
The instruction at “0x2b806327” referenced memory at “0x00000348”. The memory could not be “read”.
Click on ok to terminate the program
Click on CANCEL to debug the program
At first it stated that it did not recognize the font but when I looked it up under file, properties, fonts. The font was helvetica (embedded subset) for all the fonts on the pdf file. I have also checked the sercurity tab as well and there is no security on the file.
When I choose cancel to debug it just terminates the program. When I choose ok it terminates the program.
Please help.

Answer 1

Maybe your installation is currupt (scratched CD)
     Reinstall on another maschine (and clean CD) to validate this case.
Update your Acrobat, maybe the corresponding files are replaced or the error is fixed.