A older friend of mine (and I'm old enough as it is) had been using the Arduino environment to program a Uno on his Win7-64 PC when one day the Arduino program would no longer launch. It shows the following error:
Activation context generation failed for "C:\Program Files\Arduino\drivers\dpinst-amd64.exe". Dependent Assembly Microsoft.Windows.Common-Controls,language="*",processorArchitecture="amd64",publicKeyToken="6595b64144ccf1df",type="win32",version="220.127.116.11" could not be found. Please use sxstrace.exe for detailed diagnosis.
Why the sudden change in behavior? Why is it even trying to run dpinst?!? :astonished:
He couldn't fix it, so he switched to his laptop. It worked for a a few weeks, then it quit with the same error. He borrowed his son's laptop, and within the day it stopped working with the same error message. This time it seemed to be the result of copying in a new library, IRRemote.
I'm thinking of going over tomorrow and taking a look at his computer. Any ideas what I should look for? I've been running Arduino on Mac and Windows for over a year and had no problems. I also use Eclipse and Atmel Studio, but I think those wouldn't be options for my friend as he is in his eighties and this is the first programming he's ever done.