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Troubleshooting Roasting Intelligence syncing issues

Written by Nikolett Takacs

Updated at January 19th, 2026

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Table of Contents

Overview Instructions No active internet connection/slow internet connection The online platform C-sar is temporarily unavailable There is an excessive number of Profiles A local network environment is suppressing the connection A corrupted roast file is blocking the outbox

Overview

This article explains the troubleshooting steps for the most common issues that cause syncing problems with Roasting Intelligence.

A syncing issue is a connection error between Roasting Intelligence and the online platform C-sar that will prevent data from syncing.

You are facing a syncing issue if you see one of the following error messages within the Roasting Intelligence:

  • Error syncing data: After pressing the Synchronize button in Roasting Intelligence.
  • You can only change to a machine with an active internet connection After trying to switch machines in Roasting Intelligence Preferences.

Instructions

Please follow these troubleshooting steps to determine the cause of the syncing issue.

 

 

  • No active internet connection/slow internet connection
  • The online platform (C-sar) is temporarily unavailable
  • There is an excessive number of active Profiles
  • A local network environment is suppressing the connection
  • A corrupted roast file is blocking the outbox

 

No active internet connection/slow internet connection

You need to verify the stability of your internet connection: 

  1. Check your internet connection by opening any website in your browser. If it fails to load or is extremely slow, your syncing issue is likely caused by a poor connection.
  2. Check if you are connected to the network that you usually use.
  3. If you are using a laptop, check if the device is in flight mode.
  4. Restart the router to reset the internet connection. 
  5. Switch from WiFi to cable or vice versa. 
  6. If you can not resolve the connection problems yourself, contact your internet service provider. 

Connection confirmed? Proceed to the next section.

 

 

The online platform C-sar is temporarily unavailable

You need to verify that you can log in to the Cropster online platform C-sar without any issues:

  1. Open your browser and try to access c-sar.cropster.com. 
  2. If you can access the login page, log in.
  3. If you see the maintenance page, wait a few minutes, refresh the page, and try again. If a timeout error occurs, please wait a few minutes and retry. If the error persists, please take a screenshot of the error message and report the issue via support.cropster.com.

If you can reach c-sar.cropster.com without issues, proceed to the next section.

 

 

There is an excessive number of Profiles 

We recommend a maximum number of 100 Profiles. Avoid sync errors by keeping your active profile count within the recommended range. 

 

You need to archive any unused profiles to ensure Roasting Intelligence runs smoothly:

Archived profiles cannot be selected in Roasting Intelligence or used as filters on the Roasts overview page.

 
  1. Log in to the online platform C-sar.
  2. Navigate to Roasts on the main menu bar and select Profiles. You will be directed to the Profiles overview page. 
  3. Click the Profile Clean-up button in the upper-right corner.
  4. The Profile Clean-up page will open, showing all profiles that have been inactive for the past 90 days. Use the Filter button to narrow down your profiles by Name, Machine, or Location.
  5. By clicking on the respective checkboxes, you can select the Profiles you would like to bulk-archive. The Archive selected button appears on the top right side of the page. 
  6. Click on Archive selected to bulk-archive the selected inactive Profiles. 
 

A local network environment is suppressing the connection

If your company uses a firewall, you must allow the Cropster domain to ensure uninterrupted access. Please allow *.cropster.com to ensure an unrestricted data stream between Roasting Intelligence and the online platform C-sar.

Try switching your PC to a mobile hotspot or a different network. If syncing works there, the issue lies within your local network, and you should contact your network administrator or ISP for help.


A corrupted roast file is blocking the outbox

If you’ve ruled out the causes above, a corrupted roast file is likely blocking your sync. This "stuck" file sits in your local outbox and prevents all newer roasts from uploading. 

Please send your log files. 
We will investigate the issue and send you step-by-step instructions on how to resolve it. 

 

 If you have further questions, feedback, or concerns, please submit a support ticket directly from support.cropster.com. 

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