Openstudio run failed after Energyplus completed (problem relating to DDY file)

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I got a problem about Openstudio running. I am using Openstudio 1.14.0. When the DDY file is imported, the Energyplus simulation can be completed, but the Openstudio running is failed. The stderr gives me following error:

 DL is deprecated, please use Fiddle

  (erb):112:in `block in run': undefined method `gsub' for nil:NilClass (NoMethodError)

from (erb):110:in `each'

from (erb):110:in `run'

from C:/Program Files/OpenStudio 1.14.0/ruby-install/ruby/lib/ruby/2.0.0/erb.rb:849:in `eval'

from C:/Program Files/OpenStudio 1.14.0/ruby-install/ruby/lib/ruby/2.0.0/erb.rb:849:in `result'

from C:/Users/w_lin13/AppData/Local/Temp/OpenStudio.aF8640/resources/run/6-UserScript-0/user_script.rb:235:in `run'

from in.rb:396:in `<main>'

When the DDY file removed and there is no HVAC system, both of Energyplus and Openstudio can be completed successfully. When the DDY file removed and there is HVAC system, the Energyplus cannot be completed, and the eplusout.err gives me following errs:

Program Version,EnergyPlus, Version 8.6.0-198c6a3cff, YMD=2017.01.02 18:17,IDD_Version 8.6.0
   ** Severe  ** IP: IDF line~11161 Object=CONTROLLER:MECHANICALVENTILATION, name=CONTROLLER MECHANICAL VENTILATION 1, Required Field=[Zone 1 Name] was blank.
   ** Warning ** IP: Note -- Some missing fields have been filled with defaults. See the audit output file for details.
   **   ~~~   ** Possible Invalid Numerics or other problems
   **  Fatal  ** IP: Errors occurred on processing IDF file. Preceding condition(s) cause termination.
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=1
   ..... Last severe error=IP: IDF line~11161 Object=CONTROLLER:MECHANICALVENTILATION, name=CONTROLLER MECHANICAL VENTILATION 1, Required Field=[Zone 1 Name] was blank.
   ************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
   ************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Terminated--Fatal Error Detected. 1 Warning; 1 Severe Errors; Elapsed Time=00hr 00min  0.48sec

How should I fix the problems?