first of all thank you for your reply.
I've reinstalled sqlite3 gem and launched "sportdb new en" but the error persist:
--
$gem install sqlite3
Successfully installed sqlite3-1.3.10-x86-mingw32
Parsing documentation for sqlite3-1.3.10-x86-mingw32
Done installing documentation for sqlite3 after 1 seconds
1 gem installed
--
$sportdb new en
activerecord-utils/0.4.0 (activerecord/4.2.4) on Ruby 2.2.3 (2015-08-18) [i386-mingw32]
[TagDb.has_many_tags] adding taggings n tags has_many assocs to model >WorldDb::Model::Country<
[TagDb.has_many_tags] adding taggings n tags has_many assocs to model >WorldDb::Model::StateBase<
[TagDb.has_many_tags] adding taggings n tags has_many assocs to model >WorldDb::Model::CityBase<
sportdb-update/0.1.1 on Ruby 2.2.3 (2015-08-18) [i386-mingw32]
sportdb-service/0.4.0 on Ruby 2.2.3 (2015-08-18) [i386-mingw32]
sportdb/1.11.0 on Ruby 2.2.3 (2015-08-18) [i386-mingw32]
sportdb/1.11.0 on Ruby 2.2.3 (2015-08-18) [i386-mingw32]
[info] [builder] add world-dataset 'world.db'
[info] [builder] add football-dataset 'eng-england'
[info] [datafile] dowload
[info] download dataset 'openmundi/world.db'
[info] to './tmp/openmundi--I--world.db.zip'...
[info] download dataset 'openfootball/eng-england'
[info] to './tmp/openfootball--I--eng-england.zip'...
working directory: C:/Users/Administrator
Connecting to db using settings:
{:adapter=>"sqlite3", :database=>"./sport.db"}
*** error: Could not load 'active_record/connection_adapters/sqlite3_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile.
any other suggestions?
Thanks
Angelo