I've been trying to purchase the Standard 9 Version since last night, but I keep getting an error. Does anyone have any other suggestions for buying the code to unlock the program?
You do not say what error you are getting so I can't say much. I have not heard of any problems.
You might need to check you firewall and make sure you have cookies enabled. The latter is something I've learned - if a site isn't working right - first turn on cookies and then see what happens before trying something else.