This may or may not be the problem with your icons, but some programs automatically-- and invisibly-- attach all kinds of non-image stuff to the image file. This data can trip up any number of applications that aren't the one that put it there.
I found this out when way back when I tried to post icons to LJ and got a "file too large" error on files that should have easily fit. I found out that both Paint Shop Pro and Photoshop elements by default attach extra data, which was embiggening the file. I discovered the need to strip this stuff out, and now do so before posting almost any image here at LJ.
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Date: 2009-05-03 04:17 am (UTC)I found this out when way back when I tried to post icons to LJ and got a "file too large" error on files that should have easily fit. I found out that both Paint Shop Pro and Photoshop elements by default attach extra data, which was embiggening the file. I discovered the need to strip this stuff out, and now do so before posting almost any image here at LJ.
(You may know this already, but, just in case...)