Why reboot? You just had to close your command line window and reopen a new one!

Thanks for the tip, it saved me hours of frustration!

You're right ! Many thanks for this tip !

By the way, after having read your post, I found on this page (channel9.msdn.com/.../checkwhetheranenvironmentvariablehasbeenset) that MSBUILD use env var for any property missing.

I also found this page (forums.microsoft.com/.../ShowPost.aspx) where a guy explains that the PLATFORME environment variable is set by an HP utility (see the last post of the page).

Thanks again !

Thanks that tip helped. I opted to notepad my solution file then pick the appropriate platform instead of removing the variable.

My System I had the issue with "Debug|BPC" this post solved me a day ... Thanks

Thanks...this saved me a lot of time

Thanks, could have been a nasty one to hunt down without your help!  Was on an HP machine using "Debug|BPC".

Worked for me! I did not have to reboot eaither. I was trying to get Windows Azure Samples to build when trying to run the buildall.cmd script.

Superb!

I was starting to struggle with this problem; likewise wasn't finding much on Google - but this was spot on. Didn't work without the reboot, but that's not important and Derik said it needed the reboot.

Am also on an HP machine - wonder why that seems to be important.

Wow!  Been scratching my head over this one for a long while.  Thanks for the very useful tip!

Thanks!!!!! You've saved me many hours of utter frustration!

Thanks I removed the variable PLATFORM: BNB and now it works.

Also, my thanks to you!  Unlike your situation, this caused 30 seconds of head-scratching until we found your post.