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With all correctly coded embedding of flash files, we use javascript to embed the file within a page, this is done to make the product cross-browser compatible. The old HTML embed code will still work these days, but will give you a popup in Internet Explorer stating 'Click to Activate', which is annoying, therefore we use javascript to workaround this issue.

This error will normally appear if the flashobject.js call is missing from the headinclude template.Always check this first, if you have already done this edit then check the path to the flashobject.js file is correct and that the file is available.

Template Edit:
AdminCP -> Styles & Templates -> Style Manager -> Default Style -> Edit Templates

In the headinclude template
FIND:

<script type="text/javascript" src="clientscript/vbulletin_global.js?v="></script>

Above add this:

<script type="text/javascript" src="clientscript/flashobject.js"></script>

This edit should only appear once, since all products on a page will use different id tags but will all use the flashobject.js file.

If this does not fix your problem then enter the full url to the flashobject.js file. This maybe required if your vBulletin is not installed inside a sub-directory. An example is shown below, substitute your own own domain for the example one shown.

<script type="text/javascript" src="http://www.mydomain.com/clientscript/flashobject.js"></script>

If this does not rectify the problem, then remove the line of code completely, and insert it just above the flash embed coding, this will work, but may cause issues if you install further products developed by us.