Hi.It doesn' compile with two libraries together and send an error mensaje:
GSM\GSM3SoftSerial.cpp.o: In function
__vector_5': C:\Program Files (x86)\Arduino\libraries\GSM/GSM3SoftSerial.cpp:525: multiple definition of__vector_5'
GSMPachubeClient.cpp.o:C:\Program Files (x86)\Arduino\libraries\PinChangeInt/PinChangeInt.h:543: first defined here
GSM\GSM3SoftSerial.cpp.o: In function__vector_4': C:\Program Files (x86)\Arduino\libraries\GSM/GSM3SoftSerial.cpp:518: multiple definition of__vector_4'
GSMPachubeClient.cpp.o:C:\Program Files (x86)\Arduino\libraries\PinChangeInt/PinChangeInt.h:533: first defined here
GSM\GSM3SoftSerial.cpp.o: In function__vector_3': C:\Program Files (x86)\Arduino\libraries\GSM/GSM3SoftSerial.cpp:511: multiple definition of__vector_3'
GSMPachubeClient.cpp.o:C:\Program Files (x86)\Arduino\libraries\PinChangeInt/PinChangeInt.h:523: first defined here