Mail Bag - When sharing a CUI file, why do the icons not appear correctly?

[HyperPics]

Time to respond to another piece of mail, swish swish this one comes from the middle of the bag and has a question about sharing CUI files, but mainly with sharing those cool icons that someone spent time making for...

More... (http://feeds.feedburner.com/~r/BeyondTheUi/~3/14269164/mailbag_why_whe.html)