Syntax errors on valid VHDL 2008

The following syntax errors are reported on valid VHDL 2008 code. If line numbers become available I will be able to extend these with detailed descriptions of the failing syntax:

unexpected space expecting ":=", "range", ''', '(', '.', ';', '\', or identifier
unexpected '|' expecting "--", "/*", ''', '(', ',', '.', ';', identifier, or white space
unexpected '(' expecting ":=" or ';' 
unexpected '(' expecting ":=", "bus", ')', or ';'

#49 Syntax errors on valid VHDL 2008