** 
* Severe  ** * Problem found in EMS EnergyPlus Runtime Language.
**   ~~~   **  *   ~~~   * Erl program name: BLOCK1:ZONE1:WALL_1_WINDOW_1_CONTROL
**   ~~~   **  *   ~~~   * Erl program line number: 6
**   ~~~   **  *   ~~~   * Erl program line text: SET WIN_1_CONSTRUCTION = PCWINDOW_02
**   ~~~   **  *   ~~~   * Error message:  *** * Error: EvaluateExpression: Variable = 'PCWINDOW_02' used in expression has not been initialized! *** 
**   ~~~   **  
   *   ~~~   *  During Warmup, Environment=SITE (01-01:31-12), at Simulation time=01/01 00:00 - 00:15
**    *  Fatal  ** Previous EMS error caused program termination.
 ...Summary of Errors that led to program termination:
 ..... Reference severe error count=1
 ..... Last severe error=Problem found in EMS EnergyPlus Runtime Language.