|Acrolinx Plug-in for Oxygen||All versions.|
|Oxygen XML Editor||Version 14 or later|
When you start Oxygen or run a check with the plug-in, Oxygen displays a window with the title FATAL ERROR and a long list of Java errors. Additionally, the Acrolinx toolbar displays inconsistently or is duplicated.
This issue can be caused when you have installed two instances of the plug-in with two difference installation methods. This issue occurs when you manually copy the Acrolinx plug-in software files to the Oxygen "plug-ins" directory and subsequently use the Manage add-ons window to install another version of the Acrolinx plug-in from the Acrolinx software update site.
Resolving the Problem
Remove both instances of the plug-in and reinstall the plug-in with one method only.