PhpDig can not finish indexing of my website

[xiao]

Hello, I intalled v.1.8.4 PhpDig ,when I first time indexed my website. Phpdig threw the following error after it indexed 60 pages:
Fatal error: Cannot unset string offsets in D:\qaweb\phpdig\admin\robot_functions.php on line 810
How can I solve this problem?
My website is about 3000 pages.
Any help will be appreciated.

[xiao]

Hello
I installed PhpDig v.1.8.4, When I first time indexed it, PhpDig threw the the following error after it indexed 60 pages.
Anybody know what is the problem?
My website is about 3000 pages.
Thanks

[Charter]

In robot_functions.php find:

unset($links[$index]);
unset($http_scheme_array[$index]);

And replace with:

if (isset($links[$index])) { unset($links[$index]); }
if (isset($http_scheme_array[$index])) { unset($http_scheme_array[$index]); }