VS2010 and IE10 Attaching the Script debugger to process iexplore.exe failed

There is a simpler fix for the JavaScript debugging issue in IE10:

1. Close IE
2. In elevated cmd prompt run this command:

   regsvr32.exe "%ProgramFiles(x86)%\Common Files\Microsoft Shared\VS7Debug\msdbg2.dll"
   

(or %ProgramFiles% on a 32-bit OS)