Here is a Tomas Restrepo very useful utility class to translate HRESULT error codes from pipeline components (XML Disassembler, ...) to a understandable error code:
http://www.winterdom.com/dev/bts/BtsErrorLookup.cs.txt
For example, in my last application I get from Flat File Assembler an empty error message with HRESULT = 0xc0c01829. The Tomas Restrepo utility class, translate it to "BtsErrorAssemblerDoctypeDoesntMatchSchemas", that helps me to solve the error.
More information in:
http://technet.microsoft.com/en-us/library/microsoft.biztalk.component.aspx
For example:
http://technet.microsoft.com/en-us/library/microsoft.biztalk.component.xmlasmexception.btserrorassemblerdoctypedoesntmatchschemas.aspx
