why when I upgrade my ubercart my site breaks?

7.x-3.0-beta3 to 7.x-3.6

I've restored the site onto a different part of the server. But I'm hesitant to do an Ubercart upgrade again, like I said. When I do the automatic update in /admin/reports/updates/update it woks just fine. But when I go to do the database update I get that error across the entire site

Fatal error: require_once() [function.require]: Failed opening required '/sites/all/modules/ubercart/uc_cart/uc_cart.controller.inc' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /includes/bootstrap.inc on line 3160

That's all that I would see on my site, see screen shot attached.

I will do the update and see what happens. I'll let you know.

Ok, this time I did not run the database update and I went to clear the cache. My site never cleared the cache, or maybe it did but then my site turns all white again with only this error getting displayed

Fatal error: Call to undefined function entity_views_table_definition() in /home/eeshades/public_html/sites/all/modules/ubercart/uc_order/views/uc_order.views.inc on line 395

I will restore my site and try again and via FTP I'll remove ubercart then clear caches, then upload the newer version of ubercart. If you have any other great ideas let me know, thanks.

Ok, so I reinstalled my site that had ubercart 7.x-3.0-beta3 and rules 7.x-2.0-beta2

I unchecked all of the ubercart modules in the module listing before removing that module from my server. All was well. I then installed the newest version of ubercart 7.x-3.6, all was fine. Then I went to update my rules module b/c it is old and there is a newer version out - rules 7.x-2.6 and that's what broke my site. Thankfully I exported my database before updating rules and running the database update so I was able to quickly fix my broken site with just pointing my site to the backed up version of the database.

I will move forward. I'm closing this issue.

UPDATE

I was able to install Ubercart 7.x-3.0-rc4 and get the newest version of rules on my site. I'm not going to use any newer versions of Ubercart, I've wasted enough time trying to get my modules up to date.

Don't know why the newest version of Ubercart would break my site.

So I had my site working well, created a new product and added it to cart, went to checkout and boom, an error! Do you know how to get this fixed anyone?

The website encountered an unexpected error. Please try again later.
ERROR MESSAGEPDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'currency' in 'field list': INSERT INTO {uc_orders} (uid, order_status, order_total, primary_email, delivery_first_name, delivery_last_name, delivery_phone, delivery_company, delivery_street1, delivery_street2, delivery_city, delivery_zone, delivery_postal_code, delivery_country, billing_first_name, billing_last_name, billing_phone, billing_company, billing_street1, billing_street2, billing_city, billing_zone, billing_postal_code, billing_country, payment_method, data, created, modified, currency) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8, :db_insert_placeholder_9, :db_insert_placeholder_10, :db_insert_placeholder_11, :db_insert_placeholder_12, :db_insert_placeholder_13, :db_insert_placeholder_14, :db_insert_placeholder_15, :db_insert_placeholder_16, :db_insert_placeholder_17, :db_insert_placeholder_18, :db_insert_placeholder_19, :db_insert_placeholder_20, :db_insert_placeholder_21, :db_insert_placeholder_22, :db_insert_placeholder_23, :db_insert_placeholder_24, :db_insert_placeholder_25, :db_insert_placeholder_26, :db_insert_placeholder_27, :db_insert_placeholder_28); Array ( [:db_insert_placeholder_0] => 0 [:db_insert_placeholder_1] => in_checkout [:db_insert_placeholder_2] => 0 [:db_insert_placeholder_3] => [:db_insert_placeholder_4] => [:db_insert_placeholder_5] => [:db_insert_placeholder_6] => [:db_insert_placeholder_7] => [:db_insert_placeholder_8] => [:db_insert_placeholder_9] => [:db_insert_placeholder_10] => [:db_insert_placeholder_11] => 0 [:db_insert_placeholder_12] => [:db_insert_placeholder_13] => 840 [:db_insert_placeholder_14] => [:db_insert_placeholder_15] => [:db_insert_placeholder_16] => [:db_insert_placeholder_17] => [:db_insert_placeholder_18] => [:db_insert_placeholder_19] => [:db_insert_placeholder_20] => [:db_insert_placeholder_21] => 0 [:db_insert_placeholder_22] => [:db_insert_placeholder_23] => 840 [:db_insert_placeholder_24] => [:db_insert_placeholder_25] => a:0:{} [:db_insert_placeholder_26] => 1389389165 [:db_insert_placeholder_27] => 1389389165 [:db_insert_placeholder_28] => USD ) in drupal_write_record() (line 7170 of /home/eeshades/public_html/includes/common.inc).

I updated all of my contributing modules and am going to backup the site files and database then I will update Ubercart. Although, my site was able to process a test order so maybe I should leave well enough alone. It does work.

Longwave seems to think leaving 7.x-3.0-rc4 installed would be fine no? I'd just hate to to spend another half an hour reinstalling the site again if it breaks when I do the update to Ubercart. And when I say breaks my site I mentioned what exactly happens in #2 and #3 has the screen shot.

So should I update Ubercart or just leave it as is because it's working as it should?

Will do, I will let everyone know what happens.