Help! Error message: Sage 50 cannot open the database because some database files are read only....

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Error message reads: Sage 50 cannot open the database because some database files are read only.  Please ensure you have sufficient rights to the files, then try again.  This is posted when I try to open the program.  I installed it on Friday in a new computer with Windows 7 and restored from backup and everything went well.  Closed the program, shut the computer down for the weekend and when I tried to get back in this morning I can't.  We have allowed access through Windows firewall and through our other anti virus/firewall software even going as far as temporarily disabling our anti-viru/firewall all together and still can't get in...any ideas?  Thanks in advance if you can help.