Original GSM Shield V2 with Mega ADK GPRS problem, log included

Hi!

Im trying to run the original GsmWebClient example, APN, login and password filled correctly, but i got the following error (at AT+QIMUX command):

Starting Arduino web client.
AT%13%***z-31**%%1z-013%%10%
AT+CGREG?%13%
6 27>%13%%10%+CGREG: 0,1%13%%10%%13%%10%OK%13%%10%
AT+IFC=1,1%13%
27 33>%13%%10%OK%13%%10%
AT+CMGF=1%13%
33 39>%13%%10%OK%13%%10%
AT+CLIP=1%13%
39 45>%13%%10%OK%13%%10%
ATE0%13%
45 51>%13%%10%OK%13%%10%
AT+COLP=1%13%
51 57>%13%%10%OK%13%%10%
AT+CGATT=1%13%
57 63>%13%%10%OK%13%%10%
AT+QIFGCNT=0%13%
63 69>%13%%10%OK%13%%10%
AT+QICSGP=1,"online","",""%13%
69 75>%13%%10%OK%13%%10%
AT+QIMUX=0%13%
75 84>%13%%10%ERROR%13%%10%
Not connected

Any ideas?

Thank you!