APEX

Hello.

I am a beginner in the forum and first apologize for my poor English.

Recently, I began to learn APEX. So I downloaded the Oracle Developer Days.ova on VirtualBox
from http://www.oracle.com/technetwork/database/enterprise-edition/databaseappdev-vm-161299.html

The test began with the first laboratory
http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/apex/r41/apexstart_a/apexstart_a.htm

The problem occurred at the point of 10:
+"10 . After the table is created and the data is loaded, you are left on the Text Data Load Repository page. You can see the file that you just uploaded with 16 rows successfully uploaded. To view your new table, click the down arrow next to SQL Workshop tab and select Object Browser."+

The Object Browser does not show any objects.
Below about Application Express:

Product Build: 4.1.0.00.32
Host Schema: APEX_PUBLIC_USER
Application Owner: APEX_040100

CGI Environment
APEX_LISTENER_VERSION
PLSQL_GATEWAY WebDb
GATEWAY_IVERSION 2
SERVER_SOFTWARE Oracle-Application-Server-11g
GATEWAY_INTERFACE CGI/1.1
SERVER_PORT 80
SERVER_NAME apex.oracle.com
REQUEST_METHOD GET
QUERY_STRING p=4350:9:2054718809906009:::::
PATH_INFO /f
SCRIPT_NAME /pls/apex
SERVER_PROTOCOL HTTP/1.1
REQUEST_PROTOCOL HTTP
REMOTE_USER apex_public_user
HTTP_USER_AGENT Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1
HTTP_HOST apex.oracle.com
HTTP_ACCEPT_LANGUAGE pl,en-us;q=0.7,en;q=0.3
DAD_NAME apex
DOC_ACCESS_PATH docs
DOCUMENT_TABLE wwv_flow_file_objects$
REQUEST_CHARSET AL32UTF8
REQUEST_IANA_CHARSET UTF-8
SCRIPT_PREFIX /pls


Database version
CORE 11.2.0.3.0 Production
NLSRTL Version 11.2.0.3.0 - Production
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
TNS for Linux: Version 11.2.0.3.0 - Production

Character Set
NLS_CHARACTERSET: AL32UTF8
DAD CHARACTERSET: UTF-8

Please, any tips. Why the Object Browser does not show any objects?

Regards,
Gregory.