ManagedUI InstallDirDialog doesn't resolve the special value of the INSTALL dir at startup. This is due to the fact that special custom scheduled for that purpose is not executed yet.
Indeed it is a problem and I logged the issue on your behalf.
The problem is now corrected and you can get the latest beta release (v1.0.28.5) from NuGet
Indeed it is a problem and I logged the issue on your behalf.
The problem is now corrected and you can get the latest beta release (v1.0.28.5) from NuGet
PM> Install-Package WixSharp.bin -Pre