Adobe Acrobat X Scanning Issue?

I just purchased Adobe Acrobat X.  I have Windows 7 64bit OS.  I want to be able to scan directly into pdf as I did with my previous version of Acrobat.  I click create pdf, then select scanner and drill down and select my scanner.  Abobe Acrobat X crashes every time.  My scanner works perfectly with 2 other scanner programs using the twain driver! 

Any thoughts?

Thanks for any help!

Kevin