My attempts at building a .Net 3.5 application with NAnt 0.86-beta1 resulted in a
NullReferenceException before it ran any targets. Debugging NAnt revealed the error. The NAnt.exe.config file in my NAnt installation had this
readregistry task in the
framework element for the "net-3.5" framework, near line 470:
<readregistry property="sdkInstallRoot" key="SOFTWARE\Microsoft\Microsoft SDKs\Windows\v6.0A\WinSDKNetFxTools\InstallationFolder" hive="LocalMachine" failonerror="false" />
The error is the key attribute, which I changed to:
because I had installed the .Net 3.5 SDK after the release of .Net 3.5 SP1.