LabVIEW 2012 fail to open

[jyang72211]

My LabVIEW 2012 fails to open with a message that says side by side operation is not configured properly.  I tried to open LabVIEW 2011, and it opened and I didn't see the message, but it was very slow as it opened.  

Before I see the error, I did a repair on my Microsoft Visual C++ 2010 Redistributable Package (x86) and on my .NET 4.5.  What is the quickest way to fix that problem?

Thanks!

[jyang72211 · Accepted solution]

I did a lot of installing and uninstalling surrounding the Microsoft Visual C++ distributable, and that didn't fix the problem.  I also did a repair for the LabVIEW 2012.  Later, I look at the event log, and that pointed me to the LabVIEW.exe.config file.  I made the following change below, and that fixed the problem.  I am not sure why though.  

LabVIEW.exe.config that caused error

<?xml version ="1.0"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version=""v4.0.30319""/>
</startup>
</configuration>

LabVIEW.exe.config that fixed error

<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0.30319"/>
</startup>
</configuration>