well - if you're using 8.1 DP - its a developer preview - its a beta software - and there is no guarantee that any apps work as they should....thats the price you pay for trying out beta software -
i am tempted by DP also, but other than update 1 (and its revised start screen et al) i am not missing out on anything it seems so far... but we will see what comes today as i see another update is rolling out as i type this.