Your version and customisation is now dependant on the "php known girl" as it is married to her only. If you had submitted the changes back to the project, then it is possible that it may have been carried forward. Unless you provide adequate details, the community will find it hard to serve you.
What version of FA did you take to develop from?
What platform are you running it on?
What steps are needed to simulate your error as it may be generic to FA even now and went undetected?
Is MetisERP your brand name?
How long have you been using it and how much data has accumulated in it?
Expect that it is now in production use.
Have you changed the database schema / extended it?
Have you customised your reports?
Do you have a maintenance contract for your ERP?
Contact me offline and let me see how to bring you back into the core FA flock.
Many FA users in the enterprise level fail to provide a budget for ongoing maintenance and customise FA heavily that when their "developers" leave they are left high and dry. All of this brings all Open Source projects a lack of dependability tag since branded offerings tout the fact that they are there to serve them. In the case of FA, the community is there to serve but there is a cost for human time - the code is free though.
If you have benefited from the project please donate generously to it and help enhance it's useability by participating in the forums creditably.