IBM Notes Error Notification about Notes 9

Hello,
While I was working in IBM Notes this error appeared suddenly and I had to close the program and open it again. It started to be an error very annoying and I would like to get rid of it. Can anyone help me please to fix this one ? What is causing this error ?
Thanks !

Notes 9
An error has occurred in an IBM Notes application.
Data about the error is being collected for you company’s help desk for use in error analysis.
The IBM Notes application will close when data collection is complete. Please wait.
