As kindly suggested in the comments I have attached the file with the problem to see if anybody can help me.
In libreoffice 6.0, I have a .odp file that I can not open. When I try to open it, a message is shown saying: (I will translate from spanish)
Report of stop working.
It seems that libreOffice stopped working last one that executed. You can help to correct the problem if you send an anonymus report…
Then I click in not to send.
Then the program offers to open another libreOffice files that could be open, but not the one I am trying to open.
I would appreciate very much if someone could help me in opening the file again.