1. C:\Program Files\Software Toolbox\Symbol Factory .NET\2.0.0.221 Overwrite existing ones (SymbolFactoryDotNet.dll and SymbolFactoryNetEngine.dll)

2. start > run > cmd
type : "cd\windows\assembly"
type: "attrib -r -h -s desktop.ini"
type: "ren desktop.ini desktop.bak"

3. now open the GAC_MSIL folder normally in explorer, and i can see the actual structure.
and then i replaced the files (SymbolFactoryDotNet.dll and SymbolFactoryNetEngine.dll)

C:\WINDOWS\assembly\GAC_MSIL\SymbolFactoryDotNet\2.0.0.221__5107b9c608443dcc\
C:\WINDOWS\assembly\GAC_MSIL\SymbolFactoryNetEngine\2.0.0.221__5107b9c608443dcc\ 

