Installing Drupal

I am playing with D8, building a new theme. I was in beta14, and have upgraded to rc1. I had to upgrade drush as well.
After cache-rebuild I am unable to run my site (in localhost, using xampp),

Invocation crashes straight away with
Fatal error: Call to a member function getPath() on null in C:\xampp5680\htdocs\_D8\d800b14\core\lib\Drupal\Core\Theme\ThemeInitialization.php on line 311

this line is : $base_theme_path = $base->getPath();

Hello All!,

I am slightly new to Drupal but not to tech or CMS programming.

I am tasked with migrating a complete Drupal install from one web host to another, and I am attempting to do so with the module Backup & Migrate, but am running into a few issues.

Namely, when creating a full site backup, it keeps creating a tar.gz, which then is not restorable into the new fresh installation on my local machine (for testing purposes) as the database cannot import from a tar.gz file.

I am migrating my Drupal 7 instance to a new server running php 5.6 and Drupal 7.39 and Debian 8. I can not get it to pass the clean url test. I belive clean urls do in fact work. If I call a "clean" path it loads just fine. However if I force clean urls on with Drush no users can log in.

Drupal 8.0.RC1, Taxonomy Menu 8.x-3.0...

I tried to remove the module. I removed blocks created by this module.
Then i go to Extentions-->Delete, then select "Taxonomy menu" and delete it, clear cache.
Removing a module succeeds and no longer on the list.

But when i try edit any menu - i have next error:

Is there a version of mySql that will work with both Drupal 7 and Drupal 8, so that we can mix D7 and D8 sites on the same server?

On the System Requirements page, it says:

Drupal 7:
MySQL 5.0.15/MariaDB 5.1.44/Percona Server 5.1.70 or higher with PDO,

Drupal 8:
MySQL 5.5.3/MariaDB 5.5.20/Percona Server 5.5.8 or higher with PDO and an InnoDB-compatible primary storage engine,

Hi All,

Drupal version =7.23
Mac OS version = 10.9.5
XAMPP version = 1.8.3-1

When try to run my own module under "htdocs" directory by entering "http://localhost/abc/" (assume "abc" is the module name). The browser returns me the below error.

Fatal error: require_once(): Failed opening required './modules/system/system.install' (include_path='.:/Applications/XAMPP/xamppfiles/lib/php') in /Applications/XAMPP/xamppfiles/htdocs/abc/install.php on line 25