Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advice on) your project 
See About the IDE 1.x category.
You can not use pins 0 and 1 for two things at the same time. On the Uno, those pins are used for the communication with the PC; using them for different things at the same time will cause problems. You will have to move your SoftwareSerial to other pins; I'm not that familiar with SoftwareSerial but you can consider using the analogue pins (e.g. A0 and A1).
Which one? Please post a link.
I have some doubts The fact that the headers are fully populated does not mean that all pins are used.