Visual Studio fails debugging JavaScript in IE9 - says “The correct version of pdm.dll is not registered”
I encountered this problem after installing IE10, finding it did not work well on my Windows 7 system, and uninstalling it. Now, back to IE9, VS2010 could not attach to the process and reported the error. I followed the instructions to repair the VS2010 installation and did the regsvr32 on pdm.dll. Still does not work. Uninstalled IE9, and reinstalled it. Still no luck. Here's the solution: The key is that the message says the incorrect version of pdm.dll is not registered. Apparently the IE10 install provided a new pdm.dll and the re-install of IE9 did not replace it. I found an older version