The application appears to ignore any request to add an employee to a predefined class.  The problem is with the date.

The program requires that the short date format be MM/dd/yyyy. If your date format is different, you will not be able to enroll anyone into a class.

1. Open Regional and Language Options in Control Panel.

2. On the Regional Options tab, under Standards and formats, click Customize.

3. On the Date tab, specify any changes you want to make under Short date.

If you do not see the format you want in Short date: Type MM/dd/yyyy in the Short Date. This format will display – July 25, 2015 as 07/25/2015. Use an upper case ‘M’ for the month setting. The lowercase ‘m’ is used for the minute setting.

Note: To open Regional and Language Options, click Start, click Control Panel, click Date, Time, Language, and Regional Options, and then click Regional and Language Options.