When trying to restore a portable file (.QBM) OR restore a backup file, or Open and Convert a QuickBooks Accountants Copy Transfer File (.QBX) you may receive the following error message:
Unable to start specified database: Can't use log file “abmc.log” since it has been used more recently than the database file.
The portable company file, backup company file or accountant's copy transfer file is stored on a server (or a flash drive) when being restored/converted.
Solution 1: Rename or delete the abmc.log file
Go to the directory you are trying to restore the portable file to, and delete or rename the abmc.log file.
Solution 2: Restore the files to the desktop