Solution: http://www.prestashop.com/forums/topic/271091-images-not-showing-after-upgrading-1550
Preferences > Images
1) Set Use the legacy image filesystem to YES
2) Click Move images
Wait for the process to complete.
3) Set Use the legacy image filesystem back to NO
Should solve the problem of missing images.
DB tables created with a collation different than the database collation
http://www.prestashop.com/forums/topic/363458-fresh-install-doesnt-prestashop-respect-the-existing-database-collation/
Solution: http://forge.prestashop.com/browse/PSCSX-3486
Modules are updated according to prestashop core file updates. However the currently installed shop may not be compatible with the latest module updates. To prevent accidentally breaking the shop due to incompatible module updates,
Go to Administration Preferences to disable Automatically check for module updates
The following help to remove the update notification listing doesn’t remove the module button highlight but it is good enough for now.
Source: http://www.prestashop.com/forums/topic/319074-solvedhow-to-remove-bo-module-update-notifications/
I remove the next code from <admin directory>/themes/default/template/controllers/modules/page.tpl:
Lines 70 to 80
****************************************************************************************************
{if $upgrade_available|@count}
<div>
{l s=’An upgrade is available for some of your modules!’}
<ul>
{foreach from=$upgrade_available item=’module’}
<li><a href=”{$currentIndex|escape:’html’:’UTF-8′}&token={$token|escape:’html’:’UTF-8′}&anchor={$module.anchor|escape:’html’:’UTF-8′}”><b>{$module.displayName|escape:’html’:’UTF-8′}</b></a></li>
{/foreach}
</ul>
</div>
{/if}
****************************************************************************************************
1) Remove statistics information from dashboard.
Click NO to ‘Demo Mode’ on your Dashboard. It’s on the lower right hand side.
2) Remove all sample and demo orders, catalog etc from the database
Go to the “Modules > Modules” page.
Find the “Database Cleaner” module and click its “Install” button.
You are directly taken to its configuration page (if not, click its “Configuration” button).
Read and accept the warning, then click the “Delete Catalog” button: it will delete all your products and their attributes, manufacturers, etc.
Read and accept the warning, then click the “Delete Orders & Customers” button: it will delete all your customers and their orders, carts, etc.
Click the “Check & fix” button to refine your database integrity constraints.
Click the “Clean & optimize” button to reorganizes the physical storage of table data and associated index data, to reduce storage space and improve I/O efficiency when accessing the tables.
THERE IS NO WAY BACK. Be sure to only click these buttons if you do intend to wipe your database from its default content.
Source: http://www.prestashop.com/forums/topic/320579-delete-all-sample-data/