Warning in Admin Area After Installation - Nothing Works

[spock9458]

I have just installed version 3.2.7 of Phoca Gallery in my Joomla 2.5.11 website. When I enter the Phoca control panel all seems well, but when I go to "Multiple Add" there are two Warning messages regarding mysqli -
At the top of the page is this:
Warning: Invalid argument supplied for foreach() in /home/nmlta/public_html/libraries/joomla/database/database/mysql.php on line 383

Then, next to the "Title" field is this:
Warning: Invalid argument supplied for foreach() in /home/nmlta/public_html/administrator/components/com_phocagallery/libraries/phocagallery/render/renderadmin.php on line 70

I have uploaded many photos under images/phocagallery/2014Conference (the event I'm using). On the Multiple Add page I can see the 2014Conference folder, and when I click on that I can see all of my sub-folders, but when I click the boxes next to all the sub-folders and select "Save & Close", it goes to a page that says:
500 - An error has occurred.

Please let me know what I am doing wrong, and how I can correct these errors.

Thanks,
Rob

[Benno]

Hi,

I have just installed version 3.2.7 of Phoca Gallery in my Joomla 2.5.11 website.
[...][...]
Please let me know what I am doing wrong, and how I can correct these errors.

First of all, you should update your joomla! J2.5.11 is not secure any more!! The current version is 2.5.20
http://www.joomla.org/announcements/rel ... eased.html

Kind regards,
Benno

[spock9458]

Thanks Benno - I have now successfully updated my Joomla Core installation to 2.5.20, but the errors / warnings in Phoca Gallery are still there. I still can't seem to "load" the photos and make this work... Thanks for any help.