reseller cannot create alias, why ? tks!

[dashan]

reseller cannot create alias, error message: Parse error: syntax error, unexpected T_REQUIRE in /var/www/ispcp/gui/reseller/alias_add.php on line 32

the line 32 code: require '../include/ispcp-lib.php';

this is ispcp-lib.php:
[root@test include]# ls -l ispcp-lib.php
-rwxrwxrwx 1 vu2000 apache 10037 May 30 04:03 ispcp-lib.php

but client user can create alias. why ?

tks !