Instalation problem - couldn't resolve host name

[basist]

I have done step by step automatical instalation process for Roundcube 0.2.1:
In step 3 show me screen:
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Check config files
main.inc.php:  OK
db.inc.php:  OK
Check if directories are writable

RoundCube may need to write/save files into these directories
temp/:  OK
logs/:  OK
Check configured database settings
DSN (write):  OK
DB Schema:  OK
DB Write:  OK
DB Time:  OK
Test SMTP settings

Server: PHP mail()
Port: 25

Warning: include_once() [function.include-once]: couldn't resolve host name in /var/www/web67/web/installer/utils.php on line 15

Warning: include_once(html.php) [function.include-once]: failed to open stream: No such file or directory in /var/www/web67/web/installer/utils.php on line 15

Warning: include_once() [function.include]: Failed opening 'html.php' for inclusion (include_path='/var/www/web67/web/program/lib:/var/www/web67/web/program:/var/www/web67/web/program/include:.:/usr/lib/php/:/usr/share/pear/') in /var/www/web67/web/installer/utils.php on line 15

Fatal error: Class 'html_inputfield' not found in /var/www/web67/web/installer/test.php on line 241
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If I went to login page, the page is blank and errors are:

-------------------------------------------------------------------
Warning: include_once() [function.include-once]: couldn't resolve host name in /var/www/web67/web/program/include/iniset.php on line 93

Warning: include_once(rcube_user.php) [function.include-once]: failed to open stream: Success in /var/www/web67/web/program/include/iniset.php on line 93

Warning: include_once() [function.include]: Failed opening 'rcube_user.php' for inclusion (include_path='/var/www/web67/web/:/var/www/web67/web/program:/var/www/web67/web/program/lib:/var/www/web67/web/program/include:.:/usr/lib/php/:/usr/share/pear/') in /var/www/web67/web/program/include/iniset.php on line 93

Fatal error: Class 'rcube_user' not found in /var/www/web67/web/program/include/rcmail.php on line 122
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Does anybody know what is wrong?

[satan777]

After I upgraded to 5.2.10 on my gentoo I got the same error. The solution was to remove the curlwrappers use flag form the php use flags. It means on other distros than gentoo to remove the --with-curlwrappers configure option from compiling the php-5.2.10