PNG ICO ICNS MORE
Crystal Project
Error, wrong, warning
Maroon
16x16
Fugue
Error, judge, auction
Alert, compile, warning
Alert, wrong, exclamation
iVista 2
warning, Error, Alert
256x256
The Spherical
Error, exclamation, wrong
128x128
Mixed
Smooth
Error
3D
The Spherical icon set
red, Error, cancel
UI
Pixel
Fugue Icons
compile, Error