Problems installing Drupal 8

Hi,

I've been trying to simply test drupal 8 and I've managed to do it before but I've encountered problems. I don't know if this is a bug that should probably be moved to the Drupal 8 queue of its an issue with simplytest.me

but here is the error message when getting to the "installation profile" bit of the setup

An AJAX HTTP error occurred. HTTP Result Code: 200 Debugging information follows. Path: http://s5c036e5040a72f8.s3.simplytest.me/core/install.php?langcode=en&profile=standard&id=1&op=do_nojs&op=do StatusText: OK ResponseText: Home | Drupal @import url("http://s5c036e5040a72f8.s3.simplytest.me/core/misc/normalize/normalize.css?0"); @import url("http://s5c036e5040a72f8.s3.simplytest.me/core/modules/system/system.base.css?0"); @import url("http://s5c036e5040a72f8.s3.simplytest.me/core/modules/system/system.admin.css?0"); @import url("http://s5c036e5040a72f8.s3.simplytest.me/core/modules/system/system.theme.css?0"); @import url("http://s5c036e5040a72f8.s3.simplytest.me/core/modules/system/system.maintenance.css?0"); @import url("http://s5c036e5040a72f8.s3.simplytest.me/core/themes/seven/style.css?0"); Home Installation tasksChoose language(done)Choose profile(done)Verify requirements(done)Set up database(done)Installation profile(active)Configure siteFinished SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes: CREATE TABLE {file_usage} ( `fid` INT unsigned NOT NULL COMMENT 'File ID.', `module` VARCHAR(255) NOT NULL DEFAULT '' COMMENT 'The name of the module that is using the file.', `type` VARCHAR(64) NOT NULL DEFAULT '' COMMENT 'The name of the object type in which the file is used.', `id` VARCHAR(64) NOT NULL DEFAULT 0 COMMENT 'The primary key of the object using the file.', `count` INT unsigned NOT NULL DEFAULT 0 COMMENT 'The number of times this file is used by this object.', PRIMARY KEY (`fid`, `type`, `id`, `module`), INDEX `type_id` (`type`, `id`), INDEX `fid_count` (`fid`, `count`), INDEX `fid_module` (`fid`, `module`) ) ENGINE = InnoDB DEFAULT CHARACTER SET utf8 COMMENT 'Track where a file is used.'; Array ( )