Unable to login to the WebUI after a recent upgrade of the application server

Report Inappropriate Content · ‎Dec 12, 2018

Summary

This article covers the cause and resolution when not being able to login to the WebUI after an upgrade

Symptoms

In the process of upgrading FNMS, user runs database migration scripts successfully. Run the installer for the new version of the application server. User receives the below error when he tries to launch the WebUI:

Parser Error Message: Could not load file or assembly 'DevExpress.Web.ASPxTreeList.v12.2, Version=12.2.6.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a' or one of its dependencies. The system cannot find the file specified.

User-added image

Cause

The error indicates a mismatch between the binaries for the WebUI and its installation location.

Resolution

If the previous version was installed in the 😧 drive, be sure to install the upgrade version in the same location. The installer by default places the files in C: drive.

The 'Source File' location as in the attached screenshot should help identify the issue.