Last I heard this has soemthign to do with XoloX only recognizing certain regional settings.

In the Time tab of Regional settings I have:

Time Sample: 8:58:07 PM
Time Style h:mm:ss tt
Time Seperator: :

AM Symbol: AM
PM Symbol: PM

It looks like you have the same style and seperator settings, but changed AM/PM to a/p ... set these back and see if it helps.