You will need to clear your font cashe and restart your computer. I believe this issue was fixed in 1 of the recent updates to Filemaker 14
Thank you for your post.
JesseH is correct that clearing the Font Cache file should resolve. You might see: FileMaker Pro 14: Some fonts are replaced with an unreadable .tmp font | FileMaker
Thanks to both of you. Worked fine, and no more problems. Still curious as to why the tasks solution wasn't affected, but it's all working now.