The table "prodfeatures_options" appears to contain an error of some sort. I can read data from a specific field or any combination of those in the documentation. For example, this works just fine:

"SELECT id, caption_id, featurename, featureprice, sorting, partnumber, imagepath, selected, hidden, optcatalogid, advopt_code FROM prodfeatures_options WHERE caption_id = 2049"

However, if I try "SELECT * FROM prodfeatures_options WHERE caption_id = 2049" (which should pull the exact same info as the above code), it gives me the following error:

Error trying to get data from the store. Technical description: The '(' character, hexadecimal value 0x28, cannot be included in a name. Line 1, position 371. --- request params: ...

This may be of use to you (3dCart): Parenthesis in XML tag name

Anyway, just something to be aware of (and maybe fix if you work on the backend code for 3dCart.com and you happen to see this post).