Hi everyone! I have a very strange problem. I have ubuntu on a separate partition and used it last night after shutting down my computer (this was after I was using windows). I woke up this morning and started up ubuntu again and it displays the message "no wubuildr" and then crashes and I'm back to the screen where you choose windows or ubuntu. The funny thing is that I actually have two copies installed due to the mistake of the person who installed it for me, and both don't work (this seems to rule out some updating thing since I never use the second one).

I have tried replacing wubuildr as some others have suggested but it didn't work. How can I fix this problem/get enough information to fix this problem? (Please try to keep it at a low level since I'm not employed by tech support and am not great at this stuff)