Can't upload content pack to steam.

[iTitan]

When ever I try to do it, gmpu says this:

[QUOTE][Compiled Jun 8 2014 - 17:16:08]
Storage Quota: 1.0 GB total, 873.6 MB free
Opening temp.gma
Compressing.. [40.3 MB] => [25.1 MB]
Sending Addon to Steam..
Couldn't load icon - is it a jpeg?
Deleting temporary gma...
Temporary gma deleted.
Deleting temporary addon.json...
Temporary addon.json deleted.
[WARNING] Creation Failed!
Finished running queue.
Refreshing addon list.
Retreving list of Addons.
Retrieval Finished![/QUOTE]

Edit #1:

[IMG]http://i.gyazo.com/42f85caa26114539db281ca28db17357.png[/IMG]

[Theuaredead]

is your icon a JPG?
if no, make it a JPG
if yes, reexport the JPG with a different program