When Miss_Kagura switched Single Spark over to Spark the last time, she had those of us on chat (at the time) to make note of any glitches still there, specifically anything showing up as a square instead of quotation marks, semi-colons, etc. Miss_K got nearly everthing fixed, but I found a straggler. The Scandinavian/Icelandic words (I think) are coming up with the square.
An example can be found at the bottom of Chapter 3 in the vocabulary as well as throughout the story. Here is the link to the story Through The Mirror by Sidhe
dokuga.com/spark/story/5463/3
Just thought you should know!