Nothing is wrong. This message is just .NET specific. Read more about Managed Debugging Assistants at: http://msdn2.microsoft.com/en-us/library/d21c150d.aspx.
In this material you can find instructions how to disable MDA. One very simple, but somewhat aggressive, way to disable MDA is to tweak the registry by:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework]
"MDA"="0"
You can restore the MDA setting by:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework]
"MDA"="1"