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Home > Success Center > Network Configuration Manager (NCM) > NCM - Knowledgebase Articles > Attempting to download configs returns Error processing results and Unable to cache diff results due to exception

Attempting to download configs returns Error processing results and Unable to cache diff results due to exception

Created by Milton Harris, last modified by Melanie Boyd on Sep 25, 2018

Views: 2,790 Votes: 1 Revisions: 8

Overview

You are able to download running configs, but when try to click on download Startup Configs, an error message appears:

Error processing results. See NcmBusinessLayerPlugin log for details

 

You will find the following error when you look into the NcmBusinessLayerPlugin.log which is located by default in c:\ProgramData\SolarWinds\Logs\Orion\NCM\:

 

Unable to cache diff results due to exception: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection
Parameter name: index

Environment

NCM, all versions

Cause 

When config comparisons are set to Display Full Side by Side Comparison in NCM, devices that have large configs have larger amount of data which might cause this error. 

Resolution

Set the number of lines to display the before and after of the config to five or less.

 

  1. Go to Settings>all settings>NCM settings>Configs.
  2. Scroll to the Config comparisons section.
  3. Adjust the number of lines of comparison to display.

 

This change does not prevent NCM from displaying all the lines that are different on a config, but it limits the number of lines that are displayed before and after.

 

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