It looks like the one I have in my secondary computer
This is the downside of ubiquity - it finds all (?) other installed systems but menu.lst gets really messy
I see you have ubuntu mentioned - is it installed?
If not remove the entry
And do yourself a favour - edit the list.
You can remove all entries of memory test but one
In the title add which Mint it is and I would place all the recovery mode entries after the others - but back up first
Makes it a lot easier to select when you boot
Now to the solution
Is Cassandra represented in that list?
If so the entry points to the the wrong location and you have to change it
If not add an entry - you have excellent templates there already
If it's there and correct post back