Adobe Reader error: -10660

[Spin]

After upgrade Adobe Reader to 7.0.7, it now won't open PDF  
documents.  After double clicking any pdf document, I get an error  
message:
"The operation could not be completed.  An unexpected error occurred  
(error code -10660)."

I've deleted and re-installed acrobat, but the same problem presents.
Any ideas if this is a problem with the 7.0.7 release, or just with  
my setup?

Running OS X  10.4.5 on an iMac G5

Glenn.