Can't get any decent prints now

Mr. Bob, I have up-dated the software but cannot get any decent prints now. I have the duel extruder MBot. I have, in the past, printed great models using one extruder at a time. I have never been able to print using both extruders on a single print, whether it’s a two colour model or single colour with PVA support material. I know that the printer is capable of great prints but I can’t seem to get anything decent now.

Is there a patch or fix for the software that will allow us to print with both extruders on a single model and get a good quality print?

Is there a firmware up-date that I may have missed?

Cheers,
John

have you used our new software Mprint 1.0.3 http://www.mbot3d.com/software

Yes. I tried the stl files you sent and they failed too. Is there a firmware up-date that I may have missed?

but that has nothing to do with the firmware …