Hi,
Recently upgraded to 1.2 from 1.0.
Went to update.php and nothing wanted to be updated (except for flatrate shipping). Anyway when i am logged in there are no errors but when im not logged in i get the following error:
Warning: array_merge() [function.array-merge]: Argument #2 is not an array in /home/ecopaper/public_html/modules/ubercart/uc_cart/uc_cart.module on line 457.
Any ideas?
EDIT: New problems found. When i tried to checkout with an email address i had previously used it just says "details will be disregarded you already have an accoutn" and wouldnt let me pass to the review order page.
Also after i changed details to a new email address, passed the review order page and then finally hit submit, i submitted the order, and then it kept me on the checkout page and put my orde rinto "incheckout" in the workflow status.
Edit#2: Tried to go to update.php and do a uc_cart update but there was no uc_cart to be found. Went to update uc_store and see if that worked. Went to update #4 and it said no queries were run.

In any event, I patched it to make sure we had valid arrays at those points.
Please go ahead and update, as some other issues with the patch that resulted in this error were also fixed.