If you encounter this error when you try to build biztalk project that has some .xsd files, it means Visual Studio lost a link to a Biztalk .xsd compiler. Thus, you can just repair Biztalk Server then it will be fixed.
"Build failed. Compiler for the type ‘*.xsd’ failed. Value cannot be null. Parameter name:pUnk"
by community-syndication | Nov 23, 2006 | BizTalk Community Blogs via Syndication | 0 comments