Instale o SDK do Windows 8.1 e execute este cmd:
MKDIR %userprofile%\appdata\local\temp\dlls
XCOPY "C:\Windows\System32\dwm.exe" %userprofile%\appdata\local\temp\dlls
XCOPY "C:\Windows\System32\dwmcore.dll" %userprofile%\appdata\local\temp\dlls
XCOPY "C:\Windows\System32\uDWM.dll" %userprofile%\appdata\local\temp\dlls
SYMCHK /r %userprofile%\appdata\local\temp\dlls /s SRV*C:\AeroGlass\symbols\*http://msdl.microsoft.com/download/symbols
RD /S /Q "%userprofile%\appdata\local\temp\dlls"
para obter os PDBs.