It's a problem of support. That is, there is the issue of the unsupported OS and then an older app that has failed in some new way. I'm assuming you did this over the years since this is a 2005 title and it's 2014.
Call this software's support and if they can't fix it, ask how to move to supported versions of OS and app. Yes I know some folk resist such a move but the company that wrote it knows what's up. That is, if this area has failed they would know best.
-> Here's what I'm running into. a) the newer antivirus suites are now over reaching and causing app failures. b) old apps are failing in new ways. There is no generic cure but how to handle a client with legacy software has always been a challenge.
Bob
I run this software for a private client on an XP laptop. I also used to run it on a corporate Toshiba running Vista. Both systems work fine for the company already loaded. However, the XP machine is getting old (as am I), and I backed up the client files so that I can transfer them to the newer laptop. I insert the flashdrive in the Toshiba (Satellite running Vista) and hit the restore button in Simply. It leads me through the process asking where I want to instal the data then it flashes through something real fast and back to the start up menu. When I select to run an existing company, it only offers the one that was already set up on the Toshiba. When I check the data directory, there is no file for the "new" restored client. I have tried this several times with the same result. I am no neophyte when it comes to computers, so maybe I am missing a step in the Simply Accounting backup and restore procedures. Please help, as I need to back up my client files one way or another due to my advancing years.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic