Any idea how update the icon of workshop addon?

I followed steps one by one on this page http://wiki.garrysmod.com/page/Workshop_Addon_Updating
and the result

I have already tried update the icon with the gma file together but the icon didn’t change.
I have no idea how to next.

It says error opening file so either 2 things:

  1. You messed up the path
  2. You saved with something like GIMP or Photoshop and need to save it with MS Paint for some odd reason (i’ve had it happen)

https://dl.dropboxusercontent.com/u/7913228/workshopper_v1_0.exe

try that program.

Thanks,got it to work.