If you no longer need those versions, you should remove them. However; since this may have something to do with the specific hardware you have or conflicting software on your computer, your best bet is to call Intuit Technical Support. Have you visited their site lately? If not, it is time to give it another look! They have lots of ways to get support if you don't want to call - here is the link - http://support.quickbooks.intuit.com/support/Default.aspx?homepage=true.
Another option for dealing with clients that use older versions of QuickBooks and refuse to upgrade - is Remote Access. Remote Access options can be free and for a fee – to help you to eliminate supporting every year’s edition of QuickBooks. Even if your client DOES upgrade – what if they are on QuickBooks Pro or a Premier versions that you don’t have? As long as you have QuickBooks Premier Accountant Edition – you can Toggle over to any edition of QuickBooks besides QuickBooks Online or Mac that way you install one version of QuickBooks on your computer and be able to help a client on any version of their choice for that year’s edition!
As you can see there are many options – stay tuned to future articles for more details!