Since downloading the latest version of the Mobile HMC app on both my Droid Razr MAXX HD and Xoom tablet, I have found that the application stops working after a few uses. The work-around I have found is to go into the Settings>Apps menu and clear all data for the HMC app. This allows the app to work for several sessions.
At first it appeared that this release was a great improvement over the previous version, but now it is clearly not. The developers need to get a fix out ASAP.