Izarix Blackheart

I was just wondering if it actualy was a missing language issue because my vista laptop and my 8.1 desktop have the same problem. It's not just gestures certain display names have the boxes in them where letters should be. I'm on the 4.4.2 firestorm right now I tried the beta it didn't go over to well.. All the viewers I've used in my years on sl have had the boxes for some letters. I get the sound part I've had to play gestures a couple times to get the sounds to work right, but I'm more concerned about the letters missing. My husband has the same problem on his windows 7 desktop.

No matter which viewer I use some of the gestures I have or have seen used have boxes in them where letters should be. I was told it was because I am missing languages, but I don't know how to tell what I'm missing to fix it. I only have this problem on second life. No other sites or games I use have a problem like this. I'm using Windows 8.1 if that helps. Any ideas on how to fix it?