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The only issue I see from the sample idf file you posted is the semi-colon ";" placement. If you want to include the visible transmittance value then it should look like this (without using "!" that comments out this part):

WindowMaterial:SimpleGlazingSystem,
Glass,                   !- Name
1.817152,                !- U-Factor {W/m2-K}
0.4,                     !- Solar Heat Gain Coefficient
0.88;                    !- Visible Transmittance

If you don't want to consider the transmittance value, the TV should be commented using "!" and the semi colon ";" should be placed after the SHGC value (i.e., 0.4) to end the object as shown below:

  WindowMaterial:SimpleGlazingSystem,
   Glass,                   !- Name
   1.817152,                !- U-Factor {W/m2-K}
   0.4;                     !- Solar Heat Gain Coefficient
   ! 0.88;                    !- Visible Transmittance