Clicking OK in the "Export Dataset" wizard does not work (4333840)

Export Dataset does not work. After clicking the OK button there is not response:

Follow the steps below in order to fix the problem:

1. Close Toad for Oracle
2. Go to your User Files folder (by default it is in C:\Users\<USERNAME>\AppData\Roaming\Dell\Toad for Oracle\12.8 \User Files).
3. Delete or rename the following files:
      - ToadActions.dat
      - ToadActions.log

Note: To find out where the User Files are please go to View | Toad Options | General and look in the right hand panel the "Application Folder directory" field