EasyVR and ADXL345 with UNO

I’m using EasyVR for speech recognition and ADXL345 for gesture recognition. EasyVR is connected using Software serial library on port 12,13 and ADXL345 uses I2C ports i.e. A4,A5 using wire.h and I2cdev.h .
Both function correctly when used standalone with UNO, But when try to use both simultaneously by combining the code, the Serial monitor goes blank and shows nothing; nothing works. What could be the problem? Am I missing something?