Having problems with the shopping cart

I am getting this error when I try to purchase from the shop:

Error

You have encountered an application error, the error has been reported to the system administrators, however, we would like to have your feedback on how you got here, so do not hesitate to send us a feedback on the Technical Forum or via email (if you are not a member) at webmaster@neworderonline.com.

The error you encountered:

Object cannot be cast from DBNull to other types.

Please thank you for your patience, we are working very hard to make this system the best possible and to fix all the little problems.

I've sent emails to the webmaster but not heard anything back.

I'm using Firefox on Linux (I don't have access to IE). Is anyone else receiving this error?

Looks like it was quietly fixed. Thanks

Ooops, spoke too soon. Shopping cart works but now the paypal pay now button doesn't work.

I get this error:

Error

You have encountered an application error, the error has been reported to the system administrators, however, we would like to have your feedback on how you got here, so do not hesitate to send us a feedback on the Technical Forum or via email (if you are not a member) at webmaster@neworderonline.com.

The error you encountered:

Input string was not in a correct format.

Please thank you for your patience, we are working very hard to make this system the best possible and to fix all the little problems.

I try every day to buy the community 2 set, but I keep being disappointed. I bought the first one and loved it, but as for the second, I shall continue to suffer for its absence.

same problem, can't complete the Paypal payment.

Same problem I received as well, trying to purchase Community 2 (CD). Something tells me that perhaps the site isn't selling Community 2 anymore, hence the lack of support for the shopping website.