I´ve cloned my production site in a local Xampp installation.
My site has Memcached installed (in the server and I´ve got the drupal memcache module installed).

But I´ve got this error at my local site:

> You must enable the PECL memcached or memcache extension to use
> memcache.inc

(this is repeated at least 30 times, so that line is printed about 30 times at the top of every page).

Now, I´ve disable and unninstalled memcache at my local installation, and the error is still there.

I´ve tried after that deleting the additional settings added to my settings config file:

> $conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';
> $conf['cache_default_class'] = 'MemCacheDrupal';
> $conf['memcache_key_prefix'] = 'memcache_sitio';
> $conf['cache_class_cache_form'] = 'DrupalDatabaseCache';

But if I do eliminate those lines (after I´ve uninstalled -not only disabled- memcached module), I get WSOD and this error:

> Fatal error: Uncaught exception 'PDOException' with message
> 'SQLSTATE[HY000]: General error: 2006 MySQL server has gone away' in
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\database\database.inc:2139
> Stack trace: #0
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\database\database.inc(2139):
> PDOStatement->execute(Array) #1
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\database\database.inc(664):
> DatabaseStatementBase->execute(Array, Array) #2
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\database\database.inc(2318):
> DatabaseConnection->query('SELECT expire, ...', Array, Array) #3
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\lock.inc(167):
> db_query('SELECT expire, ...', Array) #4
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\lock.inc(146):
> lock_may_be_available('schema:runtime:...') #5
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\bootstrap.inc(405):
> lock_acquire('schema:runtime:...') #6 C:\Users\Victoria in
> C:\Users\Vic\Desktop\XAMPP\htdocs\drupal\includes\database\database.inc
> on line 2139

Please note that I´ve deleted all cache, tried disabling (and enabling) all performance options, and I´ve run run cron more than once.

What should I do? Thanks!