The reminders app in Python

F1 : new
F2 : delete
F3 : search
F4 : show properties
Enter : ok

The most common issue is missing the rDat.txt file.
You can fix it easily by running the attached files.
Note: The bat is for Windows and the sh is for Linux and Mac.
Remember to run

chmod 700 fixerr.sh  

if you're on Linux or Mac!