Checkout Errors with Products with Attributes and Tax Cloud plugin

[hilltop]

I am running a new install of v1.5.0, PHP Version: 5.3.18, MySQL v. 5.0.77, with the Andover Modern template on a dev site. I have installed Tax Cloud v1.5.

I did not try to checkout until I added Tax Cloud. When I checkout with a product in my cart that does NOT have attributes I can complete the checkout process. When a product HAS attributes I can look at my cart, choose to checkout, log into my account (if I'm not already logged in) and then I receive "WARNING: An Error occurred, please refreshå the page and try again."

When I look at the error log it says:
"[17-Jan-2013 12:46:22 America/New_York] PHP Fatal error: 1054:Unknown column 'poval.products_options_values_name' in 'field list' :: select popt.products_options_name, poval.products_options_values_name,
pa.options_values_price, pa.price_prefix
from products_options popt,
products_options_values poval,
products_attributes pa
where pa.products_id = '840'
and pa.options_id = '52'
and pa.options_id = popt.products_options_id
and pa.options_values_id = '126'
and pa.options_values_id = poval.products_options_values_id
and popt.language_id = '1'
and poval.language_id = '1' in /home/tszen/www/includes/classes/db/mysql/query_factory.php on line 101"

Additionally, when I try to look at a product's attributes in the Attribute Controller this message shows up under the Legend and I cannot view the actual attribute:
"WARNING: An Error occurred, please refresh the page and try again.
1 |"

Any help in pointing me in the correct direction to solving this error will be appreciated. Thanks.

[hilltop]

I see that for some reason the title does not correctly reflect my problem. I would swear I never wrote that title - I had written "Checkout Errors with Products with Attributes." I only discovered this a day after posting and apparently it is too late to edit or even delete this post and repost under the correct title. If a monitor reads this can you please change the title for me? Thanks.

[DrByte]

Post title changed.

How certain are you that this isn't related to Tax Cloud? Why so?

The error message literally means that your products_options_values table is missing the products_options_values_name field. And that field is present in every version of Zen Cart released in the last 8 years ... unless you've changed it either by deleting it yourself or using some mod that has significantly altered the database.