start external program

[Anonymous]

I'm starting to learn Revit AIP, but while I'm doing lesson1 there is an error "There was a mismatch between the processor architecture of the project being built "MSIL" and the processor architecture of the reference "RevitAPIUI", "AMD64". 

and I got a solution to change platform target from Any CPU to x64. however when i click start, it doesnt  start external program which is" C:\Program Files\Autodesk\Revit 2018\Revit.exe". im using student version Revit 2018 and 2017 visual studio.  it show up like the pic but they are just gone.

[jeremytammik · Accepted solution]

Welcome to the Revit API!

Glad to have you here.

The message you mention is not an error, just a warning.

You can ignore it.

Personally, I prefer zero warnings, so I implemented a little utility to fix that:

http://thebuildingcoder.typepad.com/blog/2013/07/recursively-disable-architecture-mismatch-warning.h...

https://github.com/jeremytammik/DisableMismatchWarning

Please work through the getting started material before asking any further questions:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#2

Thank you!

Good luck and lots of fun getting started with the Revit API.

Cheers,

Jeremy