If you are at a social function sometimes just a drop from a sugary drink can make the lens door cover stick. Check to see if the door cover is sticking. If it is clean very carefully.
"It happened to my Canon A590 when I let too much fine grit get on the lens barrel.
I dabbed of the face of the assembly with a towel and my breath blowing it off too.
Then with a a wand on a can of WD40 I barely touched the nozle and got a little of it distributed in the crevices. I hit the power buton and redid this. Blotting with a towel each time to prevent the liquid from getting built up to much and getting inside the electronics.
It only took a minute or two for the lens to come all the way out.
Some isoproply alcohol on a paper towel was then used to clean of the excess from the lens barrel. Making sure I got off all the grit.
