And these are the error messages (I used "copy error messages" from the IDE)
Arduino: nightly (Windows 7), Board: "Arduino Uno"
Using library GSM in folder: C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM (legacy)
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\SendSMS.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\SendSMS.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3CircularBuffer.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3CircularBuffer.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileAccessProvider.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileAccessProvider.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileCellManagement.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileCellManagement.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileClientProvider.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileClientProvider.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileClientService.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileClientService.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileDataNetworkProvider.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileDataNetworkProvider.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileMockupProvider.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileMockupProvider.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileNetworkProvider.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileNetworkProvider.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileNetworkRegistry.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileNetworkRegistry.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileServerProvider.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileServerProvider.cpp.o
C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=156 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\standard -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\utility C:\Program Files\Arduino\hardware\arduino\avr\libraries\GSM\GSM3MobileServerService.cpp -o C:\Users\Hans\AppData\Local\Temp\build3007818881054503433.tmp\GSM\GSM3MobileServerService.cpp.o
to be continued...