When I start my Active Console, I received "Display Conversion Information" error message, how do I fix it?

This usually happens when the last workspace that is loading is corrupted. It can be easily fixed though by finding the default configuration file of the ActiveConsole.

It will depend on the version though as GA3.x.x and later have the configuration file under the %appdata%\ActiveConsole directory; you will find the 'configuration.xml' file here. You can edit the part where it says:

toggle this from 'true' to 'false'

If you're still using an older version of the ActiveConsole (pre-GA3.x.x), you will find the configuration file under the %homepath%\appdata\ActiveConsole2 directory, where you will find the 'configuration.acc' file. You can safely delete this file, and it will be recreated once you re-open the console.