TextMesh Pro ForceMeshUpdate not working.

I folks, so I've used ForceMeshUpdate before with great success. Suddenly it's not working, and I don't know why.

Code (CSharp):

1. m_Message.text = "Some message to display...my actual test had 3 lines of text";
2. m_Message.ForceMeshUpdate( true, true );
3. if( m_Message.textInfo.lineCount > 0 )
4. {
5.     // do some positional work
6. }

The lineCount is always 0. When I inspect the textInfo, it's not populated at all. I made sure to pass true for both arguments.

I don't recall changing any of the code between now and when it last worked. Any ideas?!

Thanks for the help!
-Matt