I'm attempting to build ttc files.
They work on windows, and the windows font validator finds no problems with them.
They work with freetype.
My own validation tools can find no problems (but that may not say much).
They don't work on the mac. The mac somewhat randomly picks a few fonts in the ttc file and adds them to its font list. Font Book's Validation command claims that all the fonts in the ttc have "Serious Problems" in "System Validation" -- whatever that may mean.
If I extract a font from the ttc file, including all tables unchanged, then Font Book will happily validate the resultant ttf file.
If I take a standard ttc font (I used gulim.ttc) and subjected it to Font Book I got exactly the same problems.
I have tried this on 10.4 and 10.5 with similar results.
Anyone know what might be going on?