Michael,
I may or may not have found a bug. It involves trying to do a simple sweep and MoI crashing to the desktop without an error report.

What I am trying to do is a full 360 deg sweep of a circle around a loop (see attached image). Now the part where I am not sure if this is a bug or not is that I am able to do this operation at work on a 3.6 Gig Xeon with 4 gig of ram and a Quadro FX3400 256 but on my home system, a 2.4 gig Celeron with 1.5 gig ram and an Nvidia 6600 256, it crashes to the desktop while trying to perform this operation.

Like I stated earlier I am not sure if it’s a bug or not. Also I noticed that there is a process in the task manager called “moi_commandprocessor.exe” running but the odd thing is that it shows up 5 to 6 times. IS this normal operation?

Just wanted to let you know.

Richard

Hi Richard, thanks for reporting this. It certainly sounds like a bug but I can't seem to reproduce any problems with similar shapes over here.

If you can reproduce this again on your home system, can you please save out the curves you are using before you perform the operation and attach them here or e-mail them to me at moi@moi3d.com ? That will help me try to reproduce your situation.


> Like I stated earlier I am not sure if it’s a bug or not. Also I noticed that there is a process in
> the task manager called “moi_commandprocessor.exe” running but the odd thing is that it
> shows up 5 to 6 times. IS this normal operation?

It's normal to have one of those (or with the next beta, two) for each running moi.exe - you've got the extra ones there due to the extra-abrupt crashing. Normally MoI shuts those down automatically even when it crashes, but you're getting an unusual type of crash that doens't even go through the regular crash handling...

You can end those using task manager without any problems. They won't exit on their own once their parent moi.exe process has abruptly ended.

- Michael

Thanks Michael.
I'll try to reproduce it this evening if I can and send you the file.

The crashes explain the multiple instances of "moi_commandprocessor.exe" then.

I appreciate your response :)

Richard

Ok, I tried it again this evening and the same thing happened, MoI crashed to the desktop with no error.

I tried both attached files (saved before sweep execution) and both resulted in the same crash. Now both of these types of sweeps were successful on my PC at work but not at home. I was trying to perform a free form sweep at the time.

Also, I forgot to tell you, I can perform a half-circle sweep with no problem. MoI only crashes when I try a full or near full circle.

I hope this helps Michael. Let me know if there is anything else you need.

Richard

Hi Richard, can you check on something on your home machine for me?

In MoI, go to Options, and check out what is in the "Surface angle:" and "Trim curve angle:" boxes under Meshing parameters. If these are less than 10, please set them to 10 and let me know if this fixes your problem.

- Michael

Michael,

I don't believe it, they were set to 2.
I set them to 10 and everything ran smooth. Thanks again!

Richard

Hi Richard, I'm glad that solved your problem!

Right now there is a bug where if you get one individual surface with too dense of a display mesh on it, MoI will crash to desktop like that. That's why a half-circle one worked, because it was smaller it had less polygons in the display mesh and didn't go over the limit.

I've made a slight tune up for the next beta to make it less likely to run into this limit, and I'll do a more proper fix for it in the next beta after that.

- Michael

Hello Michael,

I got nearly the same bug with Moi 2.0 trial. After the several manipulations with the tools (any kind) Moi screen disappears and I see the desktop without any error messages. It's also interesting, that's if some window (like options, for example) are opened and MoI going to crash this window is still stay on until you close it with yourself! I've checked my meshing presets in options tab (now it's only a "mesh angle" parameter available) - it's set to 10. Also, Ican still find a moi.exe and moi_commandprocessor.exe into a task manager after crashig. What should I do?

Thanks in advance,
Konstantin

Hi Konstantin, well the problem that was described in this thread was due to MoI running out of memory when trying to create a dense display mesh.

From what you are describing, it doesn't quite sound like the same cause, unless does your machine happen to have a particularly small amount of system RAM on it?

You might try updating your video card drivers to the latest version available from the video card vendor's web site. Bugs in video drivers can tend to cause some weird problems.

Also, are you possibly running some kind of anti-virus or anti-spyware type security systems on your machine? Do you get any different behavior when you disable them?

Also if you have any other kind of software that hooks into the system at a low level like that (like to make custom window appearances or things like that), try disabling it and see if that makes any difference.


I'd definitely recommend updating the video driver first though and see if that makes an improvement.

- Michael

Hello Michael,

I've updated my nv quadro FX4600 drivers to last the one right before making of first post - seems to me it's not a problem. I've got a winxp x64 with 32 gb of memory - hopefully it's also will be enough. I've tried to install Moi on my mobile workstation (winxp 32 4gb mem quadro fx 1500 mobile) - and got a same problem! And only one system program, that's installed on both of systems is kaspersky! Maybe, I should put it in "white list" for antivirus.?

Konstantin

No, "white list" is not a solution! I got same problem after attaching of MoI in the "whit list" for kaspersky!

Hi Konstantin,

As long as I use MoI, I never face those problem.
Try to use different username when login to Windows.

Hi Konstantin, well you certainly have plenty of memory available, so that's not the problem.

I don't really know what is going on, but I can tell you that is an unusual problem.

Could you try the alternate trial version from here:
http://moi3d.com/2.0/trial/moi_v2_nosave_trial_setup.exe
and see if that works better or if it has the same problem?

The regular 30-day trial has this anti-hacking layer around it, and that is fairly complex, it could be part of the problem, the alternate trial version does not have that.

Also you might try disabling Kaspersky completely temporarily and then try running MoI, instead of just putting MoI on its whitelist. That's a little suspicious that is installed on both your systems and you're having the same problem on each.

- Michael