Changing country flag and pictures

i cant seem to change the flag on my country everytime i upload the the document then press confirm, the screen refreshes with the old picture. I need help asap please

Here is the interface, when I upload an image a text box says...

Please use the "Browse..." button to select a gif or jpeg file that contains an image of the president. The best image size 100x150 pixels. Smaller images will be stretched and larger images will be compressed. Note that if you upload a large image it will take longer for your home page to display in the browser.

Then I press choose file and the I press upload. then it goes onto a temporary page, then then it goes to the home country screen without my applied change in place.

I need to change the map, flag, president in the future and am waiting to make purchases, i cant invest in your company and make a purchase if this problem persists. I am waiting to make a purchase, please fix this. Goodbye.

You can use all game features even if this problem is not resolved yet.

please give us the name of the country and world.
you can also mail your new image to the gamemaster@simcountry.com
and we will try to find out why it does not accept the picture.

I changed Profile pictures and flags in all my countries and it worked just fine.
In that temporary page it says to hold down key and refresh because the old picture it´s still in the browser´s cache. The key there is about the "Ctrl" key. Hold Ctrl and refresh the page, see it that works.

At home, on my laptop, i have all the new pictures already, but at work i still found the old pictures.