I had the same issue when switching to the beta.
After installing the beta, go into your main android settings -> Applications -> DMD2 and clear the storage and cache.
Once I did this, all buttons became visible
Tried again this morning, after soing a Clear Storage & Clear cache last night.
GPS speed is now displaying MPH. Must have been some left over info from the release version causing the issue
Tried the beta out on the way to work this morning and noticed the GPS Speed was misreading high.
Speedo showing 60mph, GPS Speed showing 90mph.
If you take into account that the speedo overreads by about 4mph I was doing 56mph, which converts to 90kph.
DMD2 is set to imperial as the unit text was MPH, it’s as if the gps speed is not been converted from metric to imperial.
