Hi, everyone.
I have a LUMS which has been working since now.
Yesterday I wanted to modify the story and I was very surprised having this error message when accessing COMPOSE section : 
After closing the message window, LUMIRA DESKTOP screen appears as follows (full in blank) :
Only next posible step is closing LUMIRA DESKTOP and openning it again.
I have uninstalled current LUMIRA DESKTOP (1.28.2.52) and reinstalled again, but the same error.
I have noticed that this error only happens with one specific LUMS file.
This is the first time I see this error on LUMIRA.
Can someone give me a solution?.
Regards.