Hello, last night during my first 3 hour build my extruder board (v2.2) froze up roughly two hours in. The cupcake continued but the plastic stopped extruding.

Here's my setup.

• RepRap v. 1.2 board with 2.4 firmware 
• Extruder Control 2.2 board with 2.5 firmware
• MK4 print head
• replicator-G v. 0024

After re-uploading the firmware to the extruder, I can generally reconnect to both the motherboard and the extruder.

...But not for long...

Here's the log

[16:55:39] Reset.
[16:55:39] Motherboard firmware v2.4 (Cupcake�)
[16:55:39] Toolhead 0: Extruder controller firmware v2.5 ()
                <these are from looking at and tweaking the toolhead preferences, no restart>
[16:55:47] Packet response code: Unsupported command
[16:55:47] Packet payload: empty
[16:56:24] Packet response code: Unsupported command
[16:56:24] Packet payload: empty
[16:58:11] Packet response code: Unsupported command
[16:58:11] Packet payload: empty
                <I decided to see if the board would reset properly>
[16:58:51] Reset.
[16:58:51] Motherboard firmware v2.4 (Cupcake�)
[16:58:51] Toolhead 0: Extruder controller firmware v2.5 ()
                <and it did, so I tried it a few more times>
[16:58:53] Reset.
[16:58:53] Motherboard firmware v2.4 (Cupcake�)
[16:58:53] Toolhead 0: Extruder controller firmware v2.5 ()
                <until it failed>
[16:58:54] Reset.
[16:58:55] Motherboard firmware v2.4 (Cupcake�)
[16:58:56] Toolhead 0: Not found.
Make sure the toolhead is connected, the power supply is plugged in and turned on, and the power switch on the motherboard is on.
[16:59:00] Reset.
[16:59:00] Motherboard firmware v2.4 (Cupcake�)
[16:59:01] Toolhead 0: Not found.
Make sure the toolhead is connected, the power supply is plugged in and turned on, and the power switch on the motherboard is on.


After this I have to connect the ftdi to the extruder board, re-upload firmware, then power everything down and back up.

Any suggestions? This is really, really frustrating.