[MSDN Library June 1998] Illegal sequence use (39.352773826458%)
MSDN Library Visual Studio 6.0 > Visual Studio Documentation > Data Access Tools and Technologies > Microsoft Visual Database Tools > Interface Reference > Troubleshooting Error Messages > Query Designer Troubleshooting Errors
[MSDN Library June 1998] Illegal version number (31.946010978269%)
MSDN Library Visual Studio 6.0 > Visual SourceSafe Documentation > Reference Guide > Error Messages
[MSDN Library June 1998] Illegal version syntax: (29.8626776449357%)
MSDN Library Visual Studio 6.0 > Visual SourceSafe Documentation > Reference Guide > Error Messages
[MSDN Library June 1998] Illegal file or project name(s): (28.5369200691781%)
MSDN Library Visual Studio 6.0 > Visual SourceSafe Documentation > Reference Guide > Error Messages
[MSDN Library September 1992] Illegal Instruction Segreg (26.5678765678766%)
Knowledge Base and Bug Lists > MASM KBase
[MSDN Library June 1998] Illegal expression list usage (26.4217393436994%)
MSDN Library Visual Studio 6.0 > Visual Studio Documentation > Data Access Tools and Technologies > Microsoft Visual Database Tools > Interface Reference > Troubleshooting Error Messages > Query Designer Troubleshooting Errors
[MSDN Library September 1992] Illegal Instruction under CodeView (24.9087513793396%)
Knowledge Base and Bug Lists > MASM KBase