# Fatal Error Occurred

## Problem

A 'fatal error' message visible, similar to: 

![](https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FTczb3hjq2x7FIpKlrSLd%2F0.jpeg?alt=media)

## **Solution**

1. Disable other Revit® add-ins and re-start Revit®. \
   If this fixes the issue - try and re-enable each of the add-ins one by one. \
   Once the issue re-occurs, [forward us](https://agacad.freshdesk.com/support/tickets/new) the name of the software that caused the crash.\
   We will test compatibility and make adjustments if needed. 
2. If you suspect that ARKANCE software is causing Revit® to crash, please [forward us](https://agacad.freshdesk.com/support/tickets/new) your ARKANCE Dock and Revit log files for investigation. Log files can be found here:
   * Dock: C:\Users\\%username%\AppData\Roaming\TOOLS 4 BIM\\\*Revit version\*\\**LogT4BDock.txt**
   * Revit: C:\Users\\%username%\AppData\Local\Autodesk\Revit\Autodesk Revit \*Revit version\*\\**Journal.xxxx.txt**