I am having a similar problem than the other zen-cart user in the previous posts.

I installed the new 1.4 beta1 version

My problem:
Error: Shipping Methods not configured
item2 (ignored)
The solution in the past:
I used to modify the "\includes\modules\payment\googlecheckout.php" by adding my "item2" shipping method (this is flat rate express shipping in my case, a clone of "item" shipping method). I added my custom method in 3 places (the shippping generator was made for this).

What to do now?
1. I tried adding my "item2" in line 54 and 56, the section below those lines that I used to modify don't exist anymore (file "\includes\modules\payment\googlecheckout.php").
2. After this, I am getting the error message on the top of this post.

Thanks in advance