The specified solution configuration "Debug|BNB" is invalid

Question

In Expression Blend 4, while compiling I get an error saying

The specified solution configuration “Debug|BNB” is invalid. Please specify a valid solution configuration using the Configuration and Platform properties (e.g. MSBuild.exe Solution.sln /p:Configuration=Debug /p:Platform=”Any CPU”) or leave those properties blank to use the default solution configuration.
Done building project “myproject.sln” — FAILED.
Build failed.

Solution 1

Background: At build-time the compiler (no matter if started from Expression Blend or Visual Studio) has to know what the target platform of your code, i.e. the system architecture like X86, 64bit etc.

The problem now is, that a system wide setting of an environment variable called "Platform" seems to override any setting of what Expression Blend uses as target platform, too.

I found some workarounds on other websites and will provide the possible solutions here. Trying one of the two suggestions should help:

• Delete the conflicting environment variable "Platform" in "Control Panel -- System -- Advanced -- Environment Variables". Restart Blend and give it a try (maybe you have to restart your computer to make this work).
• If this does not help: With the registry editor (Start -- Run -- "Regedit.exe") go to key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment and selected the key Platform. Delete the value BNB. If you do not find the specified key, try repacing "CurrentControlSet" with "ControlSet001", this worked for in one case, too. Then restart your computer.

Please give a comment which of the solutions worked.

Solution 2

I just removed the Platform from Environment variables and it worked.

Comments

[David McClelland]

I was following Scott Hanselman's MSBuild tutorial (hanselman.com/blog/…) and got the same error message. Deleting the environment variable (and rebooting) fixed it for me.

[theisenp]

Deleting the "Platform" Environment Variable and then rebooting solved the problem for me. Apparently the variable is set to "BNB" by HP Easy Setup stackoverflow.com/questions/2507856/…

[Justin]

THANK YOU!! This was driving me insane, I had some legacy code that was being built with command line tools and my HP laptop has the registry setting. Deleting it and rebooting solved my problem. I was able to fix a very obscure error.

[workabyte]

We did option 2: removed the value for Platform and reboot. This worked for us and thank you!

[Robert Kerr]

Platform was being set, but not the above two methods, and I couldn't find it anywhere else, so I added a SET PLATFORM= to my batch file to clear the X64 value, and the problem went away.

[a'']

Command prompt restart is required after this - just to let y'all know

[Yaser Har]

Thanks HP for yet another thing you've screwed up on my machine. And thanks @theisenp for helping me find out who to blame. :)