Sage 50 is an accounting software that is manufactured and marketed by Sage Group for small businesses. It is one of the most recommended bookkeeping solutions that comes with advanced accounting tools like inventory management and module-level security. It also comes with various add-on options for payroll and credit card processing.
The software is available in a desktop version with access to cloud servers. It is an easy-to-use software, but in some situations, you may encounter some common errors, like the Sage 50 Data conversion error. It may be slightly different from the Sage 50 Upgrade Error or Sage 50 Login Error.
Error: “The program detected errors while converting your data. You may want to restore your latest backup and try the conversion again.”
or
Error: “Unable to open company file.”
or
Error “Sage 50 Accounting encountered a problem with your company data file during the upgrade process……………. Click to see the contents of the error report.”
It is caused when you try to convert your data file to a new version, and your file doesn’t open. The Sage 50 stops responding, and your system will freeze, unable to finish the conversion process.
Read More: Fix Sage Data Service Unavailable Error
How to Fix Sage 50 Data Conversion Error
To fix the Sage 50 data conversion error, disable the firewall and antivirus, along with any real-time scanner that is running in your system.
- It is a repair process that may take a long time, as it completely depends on the size of your company’s data file.
- Verify content from the SAJ folder.
- Disable the firewall and antivirus, along with any real-time scanner that is running in your system.
- Uninstall and reinstall the Sage 50 software.
- Try to convert any sample company from an older version to a newer version.
- You will have to reinstall MySQL connectors in your system.
- You will have to convert the backup of your data.
- Now convert your data into SAI/SAJ format.
Conclusion – Resolving Sage 50 Data Conversion Errors
When Sage 50 encounters a data conversion failure, it’s often rooted in environmental conflicts like active antivirus/firewall interference, insufficient disk space, network issues, or power interruptions.
If you’re still unable to convert your data despite the above steps, Bigxperts’ Sage 50-certified team is available to help troubleshoot and ensure a safe, successful conversion.
Frequently Asked Questions
Why did my Sage 50 data conversion fail?
Common causes include insufficient memory, blocked system access due to antivirus/firewall, running out of disk space, network conflicts, or unexpected interruptions like power cuts.
How much free disk space does a conversion need?
Up to three times the company file size, Sage temporarily uses this space during conversion.
What if an error cites a “non-existing invoice”?
Post all outstanding journals via Tasks → System → Post All Journals, then retry conversion.
Why does the network affect conversion?
Network environments, especially under RDA or multi-user setups, may trigger “Lock Table Full” errors. Converting locally often resolves this.
My conversion failed—what now?
Restore your backup that was created before the conversion attempt, then retry in a clean environment.
What else might block opening a company file?
Try running Sage 50 as an administrator, placing the company file on the local C:\ drive, and verify the .SAJ data folder is intact.
What typical errors occur during conversion?
These include messages like “cannot convert data,” “incorrect version,” or “company file not found.” Confirm that file format, version compatibility, and paths are all correct.
Still stuck? Who can help?
Bigxperts’ Sage-certified experts can assist remotely in handling your backup, conversion environment, and complex troubleshooting until it’s fully resolved.
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