Inphektion, I notice you mentioned you ran it on a Pearl, so I switched back over to the 8100 simulator. Everything seems to work fine, the secondary alerts sound when they are supposed to, no random crashes, etc. But danged if the display doesn't wrap part of the "Elapsed" checkbox. *Pfft*. I'm uploading a quick update which takes the narrower display into account. I thought the display was the same size on the 8100 as the 7100. Oh well.
I've posted an update (0.5.1) to fix this display issue on the Pearl.