Promotion Providers Issue (Price Grabber / Become) Never works

Everytime I try to generate feed for Price Grabber or Become.com I get this error message:

Length cannot be less than zero. Parameter name: value

I don't have information about dimentions of each product so i can't put anything in that (Length) field, how to tackle with this situation ? plz help.

I personally think feed should NOT be dependent on dimensions because for many online stores it is impossible to get the dimensions of each and every product.

I get this same issue only for the the Price Grabber / Yahoo.com and the Become.com. What am I missing?

"Length cannot be less than zero. Parameter name: value"

The froogle generate feed works just fine.

Thanks.

Please take a look at this: https://www.nopcommerce.com/boards/t/7506/promotion-providers-and-price-lists-will-not-generate-feed-returns-to-login-18.aspx

FYI: Google has replaced froogle with "Google Merchant Center" and old feed might not work the same as merchant center.

I'm not sure what this post is about because I just generated a feed to the Google Merchant Center via the Promotion Providers and I can see all of my products on froogle.

My question was what is causing this error "Length cannot be less than zero. Parameter name: value "?