Error: "ParseError: Invalid document structure at line..." returned by Dynamic Input tool

[LisaL]

Environment Details

• Alteryx Designer
  • all
• Gallery Data Connection is used in the Dynamic Input tool

A workflow that previously worked now has an error at the Dynamic Input tool:

ParseError: Invalid document structure at line 1 and column 1 while processing "AliasFileXml"

appears on the workflow with

Root element is missing.

in a popup. 

Upon clicking OK in the first pop-up, a different pop-up comes up saying 

Internal error in SRC_GetCosmeticName_Raw

Cause

This is a different presentation of an issue that can arise when a user's Windows password is changed. The cause is the same as described in "An Unhandled Exception Occurred" when opening Manage Data Connections window :  

The GalleryAlias.xml file is corrupted or the file cannot be decrypted.

Resolution

1. Close Designer
2. In File Explorer, navigate to %APPDATA%\Alteryx\Engine
   1. The actual path will vary, but it will take the following form: C:\Users\your_username\AppData\Roaming\Alteryx\Engine
3. Delete the GalleryAlias.xml file (or rename it so that Alteryx will not find it and then after resolving the issue delete the renamed file).
4. Restart Designer.