BTSTask gives me an error when exporting or importing bindings

BTSTask can sometimes throw an error relating to .NET versions when you attempt to export or import bindings for ActiveADAPTER send ports and receive locations. Try the following:

In your BTSTask.exe.config file (located in your Program Files BizTalk folder), add the following just under <configuration> tag:

<startup useLegacyV2RuntimeActivationPolicy="true">
 <supportedRuntime version="v4.0" />