I am currently up on ver 1.80 with a SQL db that is over 260mb that has over 1600 manhours invested.
The planned go live date was March 1st, until I found the bug in the Ship by Order Total method.
SEE BUG REPORT https://www.nopcommerce.com/boards/t/14199/it-is-clear-that-there-is-a-code-problem-in-the-shipping-by-order-total-method-in-the-nop-ver-180.aspx POSTED 2 MONTHS AGO
Since there is not a fix for the bug, I checked out ver 1.90 and the method works fine in it. So for the last month I have been trying to upgrade to ver 1.90 with the following results:
First try; ERROR MSG; Upgrade script from your version is not available (I SHOULD HAVE PAID MORE ATTENSION TO IT)
I read all on the posts on upgrading to 1.90 and assumed that it was possible, I tried several more times including deleting 1.80 off of the hosted web site and trying to do the upgrading there. Bad choice.
This morning I went into debuging mode with VS2010 and ended up finding out that there is not a nopCommerce_upgrade.sql script for ver 1.90 (as there is for 1.2 > 1.8). I AM TRULY IN A TIGHT SPOT NOW! UNLESS SOMEONE HAS SOME SCRIPT OR CODE TO UPGRADE MY SQL DATABASE TO VER 1.90 SPECS?
NOTE TO A.M.: In my ver 1.80 APP_DATA folder there is not a settings.txt file (in ref to your upgrade post)
Thanks to all who try to help.