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Technical Notes

New Flash plug-in problem:  The user may encounter errors in local playback of MetEd Archive CD/DVD products and download versions of COMET modules following installation of Macromedia Flashplayer 8. Symptoms include new windows that won't open, modules that won't launch. etc.

"Enhanced security measures" in Macromedia Flashplayer Version 8 may cause problems to users of MetEd Archive CD and DVD products as well as COMET module download versions (does not affect files on the MetEd server). Specifically, clicking links that open new windows with JavaScript commands embedded within the Flash file will not open the window/link at all.

This problem can be solved by making some minor changes to your settings. Please visit the Macromedia support site for an illustrated explanation of how to reconfigure the Flash Global Security Settings Panel to allow access to whatever drive or filesystem these local (download) versions have been installed (typically "c:\comet" for download versions or d:\ for your CD-ROM drive). Note: You MUST have an Internet connection to update your Flash settings as this problem can only be corrected while online with the Macromedia Website. These problems do NOT occur with Flashplayer 7 and earlier and may be related to whether the user has previously modified the default local Flashplayer default permissions. We apologize for this inconvenience.

Installing the Flash Plug-in

This Website was coded in Macromedia® Flash 6®. Users of older versions of Netscape® Navigator® must go to the Macromedia® Website and download and install the plug-in manually. The appropriate ActiveX control will install itself automatically if you are using Microsoft® Internet Explorer®. (It will ask you for permission before doing so.)

Enabling Pop-Up Windows

Newer versions of Firefox®, Mozilla®, Netscape®, and Microsoft® Internet Explorer 6 (specifically running on Microsoft Windows® XP with Service Pack 2) offer users the opportunity to block pop-up windows that often contain advertising on commercial Websites. Some of these browsers turn on pop-up blocking by default. All of these browsers offer the option to exclude user-specified sites from pop-up blocking. It is imperative that exceptions be allowed for domain to open pop-up windows as they are extensively used in COMET Web modules to display content (no ads, really!). You may also want to allow pop-ups from other domains as well, e.g.,,, Refer to the "Help" pages of your specific browser for instructions on how to perform this step (which varies greatly by browser, but is generally associated with privacy settings for that browser).

ActiveX Controls for Download and CD/DVD Archive Versions

Users of the download versions (and CD/DVD archives) of COMET Web modules using Internet Explorer 6 on a PC with Windows XP, Service Pack 2, will also need to allow ActiveX controls to run from the local hard disk (wherever you installed the download) or from the CD-ROM/DVD-ROM drive from which you are viewing archive discs. COMET Web modules use the Macromedia Flash Player to enrich your multimedia experience. All browsers except for Internet Explorer use a plug-in for this functionality. Internet Explorer uses ActiveX controls versions of the Flash Player. Due to more stringent security measures implemented by Service Pack 2, most users will get a warning or error message alerting them to the fact that an application is trying to use an ActiveX control from a local disc and is being blocked by default. If you do not allow this access, Flash-based Web modules will not run; however, in a corporate or government computing environment, individual users may not have permission to change this setting unless they have "Administrator" level computer permissions. Individuals in those computing environments should coordinate this activity with management and their IT department.

To enable ActiveX controls in files on hard disc and from CD ROM (applies only to computers running Windows XP, Service Pack 2), click "Tools/Internet Options/Advanced" and scroll down to "Security." Click the checkboxes for allowing ActiveX on CD and in files on My Computer (click the Apply and OK buttons, then exit). Please realize that other downloaded software and CD-DVD ROMs could contain "hostile" ActiveX controls that could damage your system so you might prefer to uncheck the checkboxes when viewing html content from other sources.