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How do I eliminate a pop-up window that states (JavaScript Application) "uninstall set"


Along with the above wording is a yellow triangle with an exclamation point inside it. It pops up numerous times at once and freezes the computer until it is clicked off. If it pops up twenty times than I must click it off twenty times in order to continue whatever I was doing.

Additional System Details

This happened

Every time Firefox opened

This started when...

about a week ago.

Installed Plug-ins

  • Garmin Communicator Plug-In
  • Google Talk Plugin Video Accelerator version:
  • Version
  • np-mswmp
  • npdnu
  • npdnupdater2
  • Coupons, Inc. Coupon Printer DLL
  • Coupons, Inc. Coupon Printer Plugin
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.4"
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Google Update
  • Shockwave Flash 10.1 r82
  • Next Generation Java Plug-in 1.6.0_25 for Mozilla browsers
  • 4.0.60310.0
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.


  • User Agent: Mozilla/5.0 (Windows NT 6.0; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

More Information

  • Top 10 Contributor
2344 solutions 20789 answers

Other users have reported that this is caused by one of their add-ons. I suggest going to the Add-ons page and disabling everything that is not essential, and then restarting Firefox. Hopefully it's not caused by something you really rely on.

orange Firefox button > Add-ons > Extensions


Tools menu > Add-ons > Extensions

Any luck?