The app store tells me that I have an available download, but when I download it it remains as available. It has been attempted about 20 times now.

The app store tells me that I have an available download. When I try to download it it comes up as being completed but the little no1 in the red circle remains and I still have an available download listed. It is for Epson printer software update and has now been listed as recently downloaded over 20 times.

I am using a macbook air running Yosemite.