Internal Error When Building MATLAB Model for VeriStand Containing Sub-Systems

Updated Nov 20, 2025

Reported In

Software

  • VeriStand

Other

Affected versions:

MATLAB:

  • R2021a
  • R2021b
  • R2022a

VeriStand:

  • 2021 and later

 

Issue Details

While building MATLAB models containing sub-system for VeriStand using MATLAB R2021a/ R2021b/ R2022a generates the below mentioned index error 2637595 as follows:

Internal error while creating code interface description file: codeInfo.mat . Aborting code generation.
 
Caused by:
  • Invalid index.
What is the best approach to resolve the index error 2637595?

    Solution

    Generating code for a subsystem that takes input from a muxed source might cause invalid index error (2637595) while building a model for VeriStand using MATLAB R2021a/ R2021b/ R2022a.

    This is a known issue and reported as a bug, MATHWorks had released patches for the following versions as below:

    Navigate to External Link: Generating code for a subsystem that takes input from a muxed source might cause invalid index error (2637595) to download the patch.

    Note: MATHWorks account is required to open the above-mentioned link.

    Other Support Options

    Ask the NI Community

    Collaborate with other users in our discussion forums



    Request Support from an Engineer

    A valid service agreement or active software subscription may be required, and support options vary by country.