VB Error - Implement A "List Builder"

I'm getting an error in this block and I'm still confused about the debugger after 6 weeks in class. I'm not asking for homework to be done simply asking where's the error in this? Full Source Code provided below

I know the error is within this code

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Scenerio:This program will implement a "List Builder", which repeatedly obtains two data elements from the user (Name and Age) and builds a list in a sequential file. The main form of the program should be similar to the following (but use your design creativity as much as desired):

#The program should have the following characteristics:

* 2 text boxes in which the user can input a name and an age. Your program should fully validate the data entered: the name should contain only letters and spaces, and the age should only contain numbers and have a reasonable range of values (let's say from 1 to 120, without decimals.)

* A Write button, which writes the data inputted into the text boxes to a sequential file. Once that data is written to the file, the textboxes should be appropriately readied for the next input.

* A File menu, with options Write and Exit. There should be a separator between the two submenu options. The submenu options should perform the same logic as the buttons with the same name.

* It is required that you use the Try..Catch statement block for every file I/O operation, so as to protect your program from unexpected run-time errors.

* A second command button that exits the application.

* As noted in the Lecture, please do not use the WriteAllText() nor ReadAllText() methods to develop your program. Instead, use the object variables and open/close methods we have been discussing in class.

# The file with the list should be saved in the default location used by VB (i.e., the "bin/Debug" folder of the solution.)

# Upon entering the program for the first time and trying to open the file, if the file already exists, the program should show a message similar to the following, and then take the appropriate action. If the file does not exist, then no message is produced. This message should be produced only once per program run (that is, not after each record is processed), and before showing the main form of the program. (Hint: consider using the form's "Load" event to accomplish this.)

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