I've just stated receivieng the following mesage when I start spybot S&D

"This application has changed since it was created

Since Spybot- S&D does not change itself, we recommend you check your system for malware & viruses instantly! "

Contained in a grey box with a red circle & white cross

The programme starts ok & the scan runs

Any clues on how to proceed?
or what needs to be changed.

Doc