You have some styles or projects on a network drive that you would like to delete, but you receive this error message.
Remove its entry from the ProjectList.XML file
Open the file in an XML editor
Navigate down to the Style or Project you wish to delete
Select it and Right Click Delete that style
Save and Close
Remove the style directory from the network
Always make a backup of your XML file before manually editing it.
Using a program like XML Notepad should help
IConfigure 2012, IConfigure 2014, IConfigure 2014 R1, IConfigure 2016