error saving autotag setting

Issue Summary

when i try change and save the autotag setting, the following error message is displayed:

The settings have not been saved because of the errors.

But I cant find any errors.

My status reports says:
Drupal 5.3
CAPTCHA Already 50 blocked form submissions
Configuration file Protected
Cron maintenance tasks Last run 17 min 14 sec ago
You can run cron manually.
Database schema Up to date
File system Writable (private download method)
GD library bundled (2.0.34 compatible)
JQuery Update Installed correctly
The current installed version of JQuery is 1.1.2
MySQL database 5.0.51a
PHP 5.2.5
Unicode library PHP Mbstring Extension
Web server Apache
jQuery UI 1.5.2

This is my recent log entries:
error php 16/07/2008 - 20:11 in_array() [function.in-array]: Wrong datatype for second argument in /home/panduan/public_html/modules/autotag/autotag.module on line 372. Abdul Rahim
error php 16/07/2008 - 20:11 in_array() [function.in-array]: Wrong datatype for second argument in /home/panduan/public_html/modules/autotag/autotag.module on line 372. Abdul Rahim
error php 16/07/2008 - 20:11 Missing argument 1 for poll_form() in /home/panduan/public_html/modules/poll/poll.module on line 118. Abdul Rahim
error php 16/07/2008 - 20:11 Missing argument 2 for image_form() in /home/panduan/public_html/modules/image/image.module on line 492. Abdul Rahim
error php 16/07/2008 - 20:11 Missing argument 1 for image_form() in /home/panduan/public_html/modules/image/image.module on line 492. Abdul Rahim
error php 16/07/2008 - 20:11 Missing argument 1 for book_form() in /home/panduan/public_html/modules/book/book.module on line 205. Abdul Rahim