nwebb

Flex, Flash, AIR

FlexBuilder, FireFox and NPSWF32.dll

May 28th, 2007 | Category: ActionScript & MXML,Flash,Flex,FlexBuilder / Eclipse

The other day I installed the latest version of the Flash Debug Player in an attempt to resolve an issue with a 3rd party Flash application.

When I next fired up FlexBuilder I received a warning message from Firefox informing me that NPSWF32.dll could not be found in:
C:\Program Files\Mozilla Firefox\plugins
The dialogue let me choose to use my “existing player” and my content ran without any problems. However, this dialogue box appeared every time I tried to publish my content from FlexBuilder.

It appears NPSWF32.dll was installed here:
C:\WINDOWS\system32\Macromed\Flash
so I copied the .dll over to the correct Firefox plugins directory. – an easy fix in this case. I have also read about other problems with installation of the .dll on both Mac and Windows (see comments).

11 comments

11 Comments so far

  1. polyGeek May 28th, 2007 1:46 pm

    I’ve had to install/uninstall the Flash debug player a few times due to issues with CS3. Now I keep a copy of NPSWF32.dll handy so that I can copy it back to it’s rightful place quickly.

  2. Matt May 28th, 2007 7:17 pm

    This patch also should help: http://www.adobe.com/go/kb401493

    Matt
    Adobe

  3. nwebb May 28th, 2007 8:30 pm

    Thanks Matt

    I see this fix is now also included in the 2.0.1 hotfix patch too :]
    http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=kb401825

  4. nwebb.co.uk » Blog Archive » FlexBuilder, FireFox and NPSWF32.dll (part 2) May 28th, 2007 8:45 pm

    [...] About « FlexBuilder, FireFox and NPSWF32.dll [...]

  5. DLL Files Guy July 27th, 2007 9:38 pm

    polyGeek says:

    I’ve had to install/uninstall the Flash debug player a few times due to issues with CS3. Now I keep a copy of NPSWF32.dll handy so that I can copy it back to it’s rightful place quickly.

    Me too….lol one stored locally and one on the server just in case… lol

    NC Tech Support Team
    -Brian Nailer

  6. Christine Taylor August 23rd, 2007 4:13 pm

    What if you don’t use this SDK.

    I see that Windows did some sort of update without asking as it is flagged to do, the result being Firefox not working and npswf32.dll apparently being to blame. To what directory is this dll supposed to be place so that Firefox works again? The patch link seems to be for high end users; I’m just a consumer end user type person. Thanks.

  7. nwebb August 28th, 2007 12:37 pm

    Hi Christine. The two paths are mentioned above.
    The dll should be here:
    C:\Program Files\Mozilla Firefox\plugins

    but you will probably find it here instead:

    C:\WINDOWS\system32\Macromed\Flash

    You will need to copy it to the correct place.

  8. cHRISTINE tAYLOR August 28th, 2007 5:33 pm

    Thank You Very Much!

  9. MDAVIDSON September 25th, 2007 3:49 pm

    Thanks Neil, this happened to me just viewing a 3rd party flash app, I was confused when it said I didnt have the latest player version when I thought I did. I installed it from the link (auto player detection) and then my flex project wouldnt run. I have had to do this before and I think your site helped me that time too. Much appreciated for a quick fix. I will also mention that you Cairngorm articles are very good.

  10. Paul December 7th, 2007 5:40 pm

    Hi,
    Anyone know how to upgrade / fix NPSWF32.dll in Dreamweaver 8.02

    Current version of NPSWF32.dll in dreamweaver is 8 but upgrading to Flash version 9 will not update this.

    Any ideas or suggestions?

  11. flexNinja » Blog Archive » Debugging in Firefox doesn’t work June 20th, 2008 10:18 pm

    [...] issue is well-documented, but I wanted to add help here for the next time I hit it and forget the [...]

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