Problem:
Unable to locate the interface used to register Delete FXP Files.

Cause:
Version 1.x.x of Delete FXP Files is dialog-based and does not have a menu bar or toolbar, so getting to the registration interface can be difficult.

Solution:
If you have an older version of Delete FXP Files Classic (its title bar will say Delete FXP Files and not Delete FXP Files Classic"):

Raise the System/Window menu for the application by clicking on the icon shown in the upper-left corner of the application (assumes US/english versions, and no skinning).  On this menu there will be an option that reads: "About Delete FXP Files...". Select this option which will raise the About Box. There will be a button on the About Box called "Registration...".  Press that button, and you will get the interface used to Register the application.

If you have a newer version of Delete FXP Files Classic (its title bar will say Delete FXP Files Classic):

Raise the System/Window menu for the application by clicking on the icon shown in the upper-left corner of the application (assumes US/english versions, and no skinning).  On this menu there will be an option that reads: "Registration...".  Select that option, and you will get the interface used to Register the application.

Reminder: It is best to copy-&-paste the Registration Information from the email directly into the interface. Be sure not to copy any extra line-ending characters or other whitespace on the end of the Name, Company, and Key strings.  All information must be the same as it is shown in your registration materials.

More Information:
When using the installer, there is a page where you can enter the registration information.  However, on some systems, this registration information is not saved correctly, and the application remains in an "unregistered" state.  If this happens, just manually enter your registration information as instructed above.