IRONCAD 2009 Startup Crash Fix And 3D Graphics Performance

The reason I could not add IRONCAD 2009 to my graphics performance comparison was because it kept crashing on start up.

I have been working with IronCAD Support to fix this issue for quite a while now. Finally we had to resort to Windows Debugger to pin point the cause of the crash. We almost tore the hair off our heads when we found that IRONCAD worked fine when called from the debugger, but crashed when run normally. Anyways, the information from the debugger led us to a number of trial and error kind of tweaks, one of which finally solved the problem.

The problem was something called Relevant Knowledge which is explained as follows:

RelevantKnowledge is a tracking cookie that may monitor your Internet habits and activities and display various surveys in popup windows. Your response to these popup surveys may be aggregated and may help determine what content you see when you are surfing the web. RelevantKnowledge may be part of an online market research community.

I have no idea how this piece of crap landed on my computer. After I uninstalled it from the Windows Control Panel, IRONCAD 2009 stopped crashing on start up. Thought I’d mention this here in case any of you are facing this problem.

Anyways, I loaded the engine model into IRONCAD 2009 and gave it a spin.

As you can see, IRONCAD uses the same technique as CoCreate Modeling and KOMPAS-3D by hiding the edges when the model is being rotated. I am told that the next version will have an option to leave the display of edges turned on. After the navigation stops, it actually take some time to calculate the edges. You can also see that a bunch of parts go missing during the rotation. I believe there is a lot of scope for improvement here. I intend to try this in their next version which I am told is IRONCAD 2011. I think they are skipping 2010.

  • Guest

    By the way, that edge delay in IRONCAD is a setting in the Tools/Options/Rendering. You can adjust it to bring the edges back immediately after release. Also, Level of Detail (dropping parts) is a setting in the Right-click rendering properties (you can turn it off completely or even crank it up if desired).

    • Interesting. I am not sure I understand the reason for having a delay in showing the edges. Why would someone want to do that?

  • Dave Ault

    Deelip, an article I read yesterday may shed some light on this. After reading I used the “Flash Cookies Cleaner 1.2” and it found cookies there that had not been removed as the article says by any of my other methods of cookie removal. Here you go.

    TOP STORY from Windows Secrets 8-4-10 edited for the sake of size.

    Eliminate Flash-spawned 'zombie' cookies

    By Woody Leonhard

    Way back in a 2008 column, I spotlighted one of the most insidious and least-known features on the Internet: Adobe Flash cookies that were not subject to the usual cookie rules.

    Almost two years later, these special Flash cookies are still living in our PCs, and enterprising privacy-busters now use them to create zombie cookies — regular cookies that come back from the dead.

    My Oct. 23, 2008, column, “Flash cookies are putting your privacy at risk,” described how data stored by Adobe's Flash Player is beyond your browser's control and how it could store more personal data than you'd suspect.

    Flash cookies are the all-pervasive app

    In order to understand zombie cookies (yes, that's the technical name), you need to know about Flash's Local Shared Objects, or LSOs — the formal name for Flash cookies. My 2008 column goes into detail about LSOs, but the upshot is this: Adobe Flash Player LSOs work much like the cookies maintained by our browsers — they are files that live in our computers and are updated and read by Web pages that we visit.

    Since Flash Player runs on more computers than even Windows (!), Flash Cookies are as close to universal as anything on the Internet. Steve Jobs won't let Flash run on iPads and iPhones, but for just about everything else, there's a version of Flash.

    Like standard cookies, LSOs usually fly under the radar. But they can store significantly more data than the usual cookie. Regular old browser cookies are limited to 4KB in size; LSOs can go up to 100KB. Regular cookies are completely controlled by your browser — you can use your browser to turn them on or off, to delete them, to block them. Not so LSOs. They are controlled by Adobe's Flash Player, and it's notoriously difficult to get at them.

    While you may not have easy access to Flash LSOs, Web sites do. If you have Adobe Flash installed on your computer, Web pages can set and read Flash cookies — whether the page you're viewing has a visible Flash animation or not. So while you think you've blocked a site's cookies, it's entirely possible for the site to use an LSO for the same purpose.

    And it's all hidden under the covers and difficult to turn off unless you run a Flash Cookie blocker (more about which later) or jump through some major hoops.

    Cookies that return from the cookie-crusher

    Most PC users know the basics of Web cookies. Most have their computers set up to block cookies, block third-party cookies, or delete all cookies when they end a browsing session. It's all based on your level of paranoia. You may have a spyware scanner that looks for and deletes various types of cookies, particularly from marketing companies such as Doubleclick. Even those of us who allow cookies free rein still delete them from time to time, if only to clear out the cobwebs.

    Here's how zombie cookies reappear.

    When you visit Web sites, they often plant cookies on your computer, if they can. But some sites will also stick duplicate cookies into the Flash LSO. When you go back to these sites, they check whether you have their standard cookies stored in your browser. If none are found, they then check whether there's any doppelgänger cookies in the Flash LSO. And if they find any, the sites reconstruct their original cookies and stick them back into your PC. Very clever.

    Zombie cookies are scary because they provide online companies with a secret way to keep tabs on people and their Web-surfing proclivities. Unless you check your browser's list of cookies regularly, you may never know that these resurrected tracking cookies are back in business.

    Take control of Flash cookies with PC cleaners

    Controlling Flash LSOs, and thus eliminating zombie cookies, is a pain in the neck if you use the Adobe method, which involves futzing around with a very unfriendly Web site. I talk about the official method in my October 2008 article.

    For Firefox users, an add-in can now help. To control Flash cookies, just download (page) and install the BetterPrivacy add-in for Firefox.

    For cleaning Internet Explorer, there are two products — both free — you can try: CCleaner, available for download on Piriform's home page, and Flash Cookies Cleaner 1.2, offered as a free download on Softpedia's site.

    Certainly, the zombie cookie approach to subverting a user's direct commands — reinstating a cookie after the user has explicitly deleted it — constitutes some sort of privacy invasion. Whether it's actionable in court is anybody's guess.

    Should be quite interesting.

    Have more info on this subject? Post your tip in the WS Columns forum.

  • Regular old browser cookies are limited to 4KB in size; LSOs can go up to 100KB