I just wanted to say that they have fixed my purge issue, and I am waiting for the Alpha to come out to test it. Can't wait, as the rest I have seen has fixed everything I had problems with in the previous versions.
Here is hoping!
I have a Robo. Where did the option for Automatic Print Leveling go?You are probably getting confused about the different kinds of print leveling that are available. Your Robo has hardware leveling which allows it to probe the height of the bed before each print. Other printers don't have this feature, so for them MatterControl has the option to use automatic software leveling. This is where you measure the height of 3 points on the bed using the piece of paper. If you try to use both types of leveling at once, they will conflict with each other and cause problems. This is why the option for software leveling is now hidden if you have a Robo or any other type of printer with a probe. For more information on the various types of leveling, and how to configure them, look at our article on Automatic Print Leveling.
I know this is an old thread but this thread came up on a search for "System.IO.IOException" error while connecting to my printer. If you installed the driver from Matter Hackers, you need to open Device Manager and find the entry for your printer. Mine was under Ports>COM4(yours will be a different number). Right click your COM Port and click Update Driver. Then select Search Windows Update. It will update the driver and you should be able to connect.
@dennolan I just made an account to confirm this 100% works, I'm a new user currently without home internet and I downloaded this to replace tinkercad, I was about to just move on to the next program until I read this. Thank you!
If you are proficient enough with MC you can probably get the stuff to work, but I'll be honest, just don't. MC sucks for model modification/management to the max. This includes its slicing of multiple meshes in the same object. Get free program that has good mesh/model control and management. Export your object (or objects as multiple stls with the same origin point) and then import (each and align) in MC.
I use Blender, but there are others out there.
mpirringer got that one on the nose there. Though they have fixed most of the memory leaks in the newer version.
If I run the same print without reslicing I can run it forever without a problem.
Though after several slices I restart MC. If I don't the computer runs slow and older versions crash.
The thing is, MC (at least older versions) don't take advantage of anything over 8 gig of memory. The computer I run it on has 16, but MC never uses more than 6.9 gig. It just starts having issues after it uses up its allotted amount.
I am having the same issue. I have a CTC Bizer dual extruder (Makerbot Replicator clone) and while I can run the printer just fine with the current version of MatterControl by connecting a USB cable between my laptop and the printer, I can't get the software to export viable .x3g program files to an SD card so I can run the printer that way - all exports seem to come out in "gcode" format.