# RUN MCIP v5.1 ERROR in subroutine READNML(WRFv4.1.5 and CMAQ5.3.1)

**URL:** <https://forum.cmascenter.org/t/run-mcip-v5-1-error-in-subroutine-readnml-wrfv4-1-5-and-cmaq5-3-1/1411>\
**Category:** MCIP\
**Created:** [April 3, 2020, 9:30am UTC](https://forum.cmascenter.org/t/run-mcip-v5-1-error-in-subroutine-readnml-wrfv4-1-5-and-cmaq5-3-1/1411 "2020-04-03T09:30:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CN\_CODER](https://avatars.discourse-cdn.com/v4/letter/c/f08c70/32.png) [@CN\_CODER](https://forum.cmascenter.org/u/CN_CODER)\
**Post date:** [April 3, 2020, 9:30am UTC](https://forum.cmascenter.org/t/run-mcip-v5-1-error-in-subroutine-readnml-wrfv4-1-5-and-cmaq5-3-1/1411/1 "2020-04-03T09:30:52Z")

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HI  
I am running mcip V5.1 And I get the following error:

 ![QQ截图20200403172818](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/1X/2c2f2af866567a9533fb3b25d40c34126d82ab94.png)  
First thought that the USERDEFS segment parameters were inconsistent with the parameters in the readnml.f90 file

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**Author:** ![mmallard](https://avatars.discourse-cdn.com/v4/letter/m/8797f3/32.png) [@mmallard](https://forum.cmascenter.org/u/mmallard)\
**Post date:** [April 3, 2020, 12:20pm UTC](https://forum.cmascenter.org/t/run-mcip-v5-1-error-in-subroutine-readnml-wrfv4-1-5-and-cmaq5-3-1/1411/2 "2020-04-03T12:20:56Z")

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Hi,  
I’m not sure what you mean by “inconsistent.” Was the namelist file was created? If so, it’d be a help to share it here.  
Thanks,  
Megan