Does he know that this is a OS X site?
Too funny @scottb
Excellent response. My office mates are ROFL

@Bond77 What's a Microsoft Project?

How big is your mpp file? You may try increasing the amount of memory available
to Java Runtime. Unfortunately you can't do it for ganttproject.exe (which is
associated with GanttProject shortcuts in Windows menus) but you can do it for
ganttproject.bat which comes with ZIP distro (and with Windows distro too,
AFAIR). Try replacing -Xmx512m with -Xmx1024m in ganttproject.bat and start
that bat file.
Also I can suggest this program Recovery Toolbox for Project https://project.recoverytoolbox.com/

boberito, office program

Hmmm.

@Bond77 because no one else has pointed it out very clearly. this site is a community for admins of JAMF Software's Casper Suite which is a management tool for Macs. Naturally most people here work with Macs and most questions are focused on Macs. Although many do work with Windows as well. Glad you did get an answer that helped you, but just something to keep in mind when posting here in the future. There may be other communities where you might get quicker and better feedback.

@bpavlov is correct of course - maybe my tinfoil hat was on too tight - seeing two one-post people here asking and answering a completely non-JAMF question. Must be my evenings listening to C2C catching up.