Even on your demo page demo.joomlaworks.net/simple-image-gallery-pro the example with Galleria gallery layout don't work properly. (Bond pictures)

Try to press thumbnails one by one (1>2>3) and when you press 4th thumbnail - nothing will happen - you will need to reclick  the thumbnail. And the more times you press thumbnails the more times you need to repeate pressing the thumbnail.

I have just checked it and it works excellent!

I have just cecked on another computer and it work in a way I've described - one thumbnail works, another - doesn't. Try to click on all thumbnails one by one

I have just re-tested and works perfect!!!

I had the same problem when I created a gallery. Sometimes pressing the thumbnails worked, but most of the time it did not. In some cases I had to press a thumbnail three or four times for it to work.

With the demo I have the same problem, using Chrome and Firefox 5.0. Initially I though the problem had to do with my installation or something I was doing wrong. But then, checking the demo, I noticed that it seems to be related with the plugin behaviour itself.

demo.joomlaworks.net/simple-image-gallery-pro

Any inputs on how to correct this problem? Would it be associated with the way the code works in the behaviour.js?

jm

I also still have the same problem using galleria with google chrome

It doesn't work on the demo.joomlaworks.net/simple-image-gallery-pro .
You have to often click twice on a thumbnail for the image to appear.

This is also what is happening on my site at this location qfund.org/cms/index.php?option=com_content&view=article&id=76&Itemid=58

No it doesn't... Just on a click the images are changing without any problem...

That isn't correct .... With the google chrome browser Sometimes a single click works and sometimes you have to click twice. This happens on the demo , my site and others

I just have noticed the issue... It happens not very often however...
We will check it out asap.

it happens often. and when it happens first time you should press thumbnail twice to open image, on the second time you shoul press thumbnail thrice. And so on.