Can anyone help with my full size images not working please?

Firefox does nothing and IE shows error messages...

www.serenangharad.com

Thanks in advance for any help.

The problem is happening when a watermark is being applied to your image. If you did not intent to apply a watermark.

There are some watermarking issues with the 1.2.3 build so you may not be able to turn them off. These are fixed in the current nightly build.