I have setup the spanish in the backend. When I click the language icon to change language from english to spanish.
Then it open a blank page....
I need to click the back button from the broswer to refresh the screen. Then it works properly again.
This is a bug, hope abantecart team can fix it.
I have tested this both on my server and the abantecart demo.

It seems that I have fixed the problem by removing character "*' in the following line.

modify    $cache_files = glob( DIR_CACHE. '*/*', GLOB_NOSORT);

to
   $cache_files = glob( DIR_CACHE. '/*', GLOB_NOSORT);

It works now.

Besides, after I have installed abantecart successfully. I also have found that there is missing "?>" in the /system/config.php file.
Please also fix it.

Yes! It is writeable.

But I have added this line. ( if(is_array($cache_files)) { )
It seems that the function glob() can't return the value (array) to the $cache_files.

It works for me to add the line : if(is_array($cache_files)) {

Thank you!

     public function __construct() {
      $this->registry = Registry::getInstance ();
      $cache_files = glob( DIR_CACHE. '*/*', GLOB_NOSORT);
      if(is_array($cache_files)) {
      foreach ($cache_files as $file) {
         //first of all check if file expired. delete it if needed
         $file_time = filemtime($file);
         if ( (time() - $file_time) > $this->expire ) {
            if (file_exists($file)) {
               unlink($file);
               continue;
            }
         }
         //build cache map as array {cache_file_name_without_timestamp=>expire_time}
         $ch_base = substr($file,0,-11);
         $this->cache_map[$ch_base] = $file_time + $this->expire;
      }
      }
     }

I also has this problem.

I am not familiar with programming. In fact, I want abantecart to add this block.
Anyway, thank you for your instructions. I will try to do it myself later.
I think that I can copy the "latest block" and modify it to become the block which can fulfill my needs.
Thank you!

I would like to create a few custom category blocks to display the products under the specified category.
However, the block display the category in the block only but not the products in the specified category.
This is not the format which is requested by me.
I want to show all the latest products in each custom category. How can I do it?
Can abantecart modify the code to support this requirement (add an option there to display the products under the category, and only allow to display a limited no. of products only (ie, 4 to 8 products only)). Displaying the products  in the specified category is more useful than displaying a category.

i think it's a bug of UI. You cannot to change section of definitions after creating of language definition.
Delete and recreate it for storefront section.
we'll consider this misunderstanding.
Thank you.

You can test it by create a new text and set it to Storefront. But it can't be save. The system will force it to save as "admin".
Besides, when change to other language and then back to the original language, the value of the default language will be cleared.