[Plugin: NextGEN Gallery] “Notice: Undefined index: galAjaxNav” errors

Hi, thanks for the great plug-in!

I am getting the following error for every page in my site:

Notice: Undefined index: galAjaxNav in /home/nealio/web/wordpress/drumlab/wp-content/plugins/nextgen-gallery/nggallery.php on line 337

I’m aware that these errors were reported some time ago and were fixed; however they seem to be present again.

I’m using:
WordPress 2.9.2
NextGEN Gallery 1.5.0

If it helps, here are my server settings (my development machine):

* Operating System : Linux (32 Bit)
* Server : Apache/2.2.12 (Ubuntu)
* Memory usage : 13.85 MByte
* MYSQL Version : 5.1.37-1ubuntu5.1
* SQL Mode : Not set
* PHP Version : 5.2.10-2ubuntu6.4
* PHP Safe Mode : Off
* PHP Allow URL fopen : On
* PHP Memory Limit : 32M
* PHP Max Upload Size : 2M
* PHP Max Post Size : 8M
* PCRE Backtracking Limit : 100000
* PHP Max Script Execute Time : 30s
* PHP Exif support : Yes ( V1.4 )
* PHP IPTC support : Yes
* PHP XML support : Yes