It takes a while to load the 'Undo' list

The history of all renaming operations are stored in a text file. After a while it can take a while for the program to read through all the old renaming entries. To speed things up, go to the following directory

c:\program files\file renamer

Rename the logfile.txt to logfile.old

Then you still have a backup copy of all your previous renaming features and File Renamer has a blank file to start from again.