Adafruit fona 808

Hello Everyone,

This is my first post in this community as i just started with netduino development for one of my projects I’d like to prototype…
I’ve bought the ADAFRUIT FONA 808 shield from which I’m trying to communicate with and get some GPS lock.
In the code, written based on reverse engineering of the fona library for arduino, I’m using a serial port on COM2 to write the adequate AT commands and read their responses.
however, the program crashes after sending an AT command with an MSCORLIB.DLL exception.

Has anyone any experience with this shield?

Your input would be greatly appreciated.

Many thanks in advance

Kind regards

Alain

PS: I’m using a Netduino 2 PLUS running on NETMF 4.3