Xbee an DS3231 libraries conflicts

I’m use a Seeeduino Stalker v2.1 with Xbee Module, for this use the Xbee.h library, and i want show date and time, but when I begin “RTC.begin()” in the setup the this stop my program. I proved and I have select for use xbee or rtc.
Somebody have the same problem? The problem it detect when the program run over SeeedStalker

I think it would be easier to solve problem if you provide some additional information, i.e. your OS, Arduino IDE version, etc

From times to times there are might be problems with compilers, such as this issue

solved, “Wire.being” was not initialized