error occurred whilst parsing the xml .Can anybody help?

Ihave been receiving the message below on my desktop screen upon switching on the laptop.trados 2009 installed.I have tried to re-install but the same message appears

If I remove and install 2017 will that reappear?

2.What sort of error is it? it looks like an incorrect command on the software code of Multiterm2009

Iwould appreciate any suggestion

M

 

 

 

An error occurred whilst parsing the xml .Please check whether the file at:c:\Users/user /AppData/Roaming/SDL/SDLMultiTerm/WidgetSettings.xml is well formed

Hexadecimal value 0x00 is an invalid character in ine Line1 Position 1