[FAQ] Troubleshooting: Read this before posting

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T-LAB Team

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Jan 30, 2026, 11:32:13 AMJan 30
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Common Issues and Quick Fixes

Before asking for help, please check if your issue is listed below. These are the most common situations encountered by users.


1. Error: "No folder with demo files" / User Mismatch

  • Issue: You receive an error saying "No folder with demo files in the following directory..." when launching T-LAB. This happens when the Windows user launching the software (e.g., Mary) is different from the user who installed it (e.g., Marc).
  • Solution: T-LAB must be installed and used by the same Windows user. You have two options:
    • Option A: Copy the T-LAB PLUS folder from the original installer's Documents folder to the current user's Documents folder (for ex.: from “C:\Users\marc\OneDrive\Documents\T-LAB PLUS” to “C:\Users\mary\OneDrive\Documents\T-LAB PLUS”).
    • Option B: Uninstall T-LAB and reinstall it while logged in as the current user.

2. Application Errors, Delays, or Sluggish Performance

  • Issue: T-LAB runs slowly or crashes during pre-processing.
  • Cause: Your T-LAB PLUS folder (in Documents) is being synced in real-time by cloud services like OneDrive, Dropbox, or Google Drive.
  • Solution: Pause or turn off synchronization for the T-LAB folder in your cloud settings while working with the software.

3. "T-LAB is not responding" Message

  • Issue: Windows displays a "Not Responding" message while T-LAB is working.
  • Solution: Do not close the program. This behavior is normal during intensive pre-processing steps. Please wait for the calculation to finish; forcing it to close will interrupt the analysis.

4. Analyzing Texts in Latin

  • Issue: You want to process texts in Latin but the option is not available or working.
  • Solution: Latin requires an additional module.
    1. Download the setup file here: https://www.mytlab.com/T-LAB_10_Lat_Setup.zip.
    2. Unzip the file and run Setup.exe.
    3. Launch T-LAB.

If your issue is not listed here, please search the group discussions or create a new post with details about your operating system and the specific error message.

T-LAB Team

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Feb 23, 2026, 6:34:14 AM (2 days ago) Feb 23
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5. Error: "Existing prior version of T-LAB identified" during installation

  • Issue: The installation of the freeware version of T-LAB cannot proceed because Windows detects a previous version of T-LAB that wasn't fully removed
  • Solution: > You need to manually delete a hidden system folder before restarting the installer:
    1. Show Hidden Items: Open File Explorer, go to View, and ensure Hidden items is checked (on Windows 11: View > Show > Hidden items).
    2. Locate the Folder: Navigate to C:\ProgramData.
    3. Delete: Find and manually delete the T-LAB PLUS subfolder.
    4. Reinstall: Run the T-LAB installer again.

Note: This folder is different from the one in your personal "Documents" directory; it is a system-wide folder used for installation data.

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