Advanced Poll PHP warning error when voting

My polls used to work fine for quite a while (couple months) when one day i realised i was getting no more votes on my polls although they were well advertised on my site.

So i decided to vote at one of my own polls and realised i get the following error:

Warning: fopen(/home/httpd/vhosts/****/httpdocs/pollphp/textfile/polldata/3.ip): failed to open stream: Permission denied in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 130

Warning: flock(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 131

Warning: fwrite(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 141

Warning: flock(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 142

Warning: fclose(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 143

Warning: fopen(/home/httpd/vhosts/****/httpdocs/pollphp/textfile/polldata/3.log): failed to open stream: Permission denied in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 155

Warning: flock(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 156

Warning: fwrite(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 157

Warning: flock(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 158

Warning: fclose(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 159

Warning: fopen(/home/httpd/vhosts/****/httpdocs/pollphp/textfile/polldata/3): failed to open stream: Permission denied in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 238

Warning: flock(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 239

Warning: fwrite(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 241

Warning: fwrite(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 248

Warning: flock(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 250

Warning: fclose(): supplied argument is not a valid stream resource in /home/httpd/vhosts/****/httpdocs/pollphp/textfile/include/class_poll.php on line 251

I dont know if this is the cause of the problem but recently my web host upgraded their php to version 4.3.10 and i made them upgrade their Zend Optimizer to v2.5.7.

I dont see how the upgrade of php could have caused the problem though because advanced poll is supposed to work with PHP v 4.3.10.

Any suggestions anyone?

Shivan Jaikaran