Indeed, looks to me like the path 'G:\MFE_PROFOS DATA\GroheUPI.mdf' is not valid... or SQL cannot see it.
Is the G drive visible from SQL?
Try exec xp_fixeddrives
If the disk isn't there... well your database isn't either.
Todd Carrier
MCITP - Database Administrator (SQL 2008)
MCSE: Data Platform (SQL 2012)