Why is user asked to add foriegn font package when opening livecycle document?

[#1]

I have three livecycle forms that I have multiple end users utilizing.  One of those form requires the downloading of a foreign or Asian font package to Acrobat Reader for some but not all users.  The other two forms work fine for all users.  What is different about the one form and how can I correct it so this does not happen? I would imagine it might have something to do with the fonts embedded in the Livecycle document.

[#2]

I believe I have spotted the potential culprit. Comparing my forms that are working to the one giving us trouble this symbol is the only one not listed as Encoding: Ansi. Plus BR001 mentioned that some "symbols" have been giving trouble.  My question now is how do I find it in the form and change it.  I have virtually no HTML or xml training. Looking at source code - Is there a way to search for it and then how do I go about changing it to something that works without messing up the whole document?