Specifically, whenever I have the OpenLog RXD pin connected to the MSP430 the OpenLog LED's flash back and forth very rapidly and then after about a second the blue LED begins to flash steadily. If I connect the FTDI to the TXD I do not see any errors across the serial interface (like I do when there is no card for example). I connected a logic analyzer and verified that this flashing is happening before the MSP430 even sends any data. In fact I can reproduce this if I just connect the RXD pin to GND (which should be OK right?) which should be the same as an idle serial line right?
Does anyone know what rapid LED flashing followed by slow blue LED flashing means?