Progressbars - App Open A Save Confirm Message Box Open

Questions regarding progress bars. to start i would like to say what i am trying to do: i am trying to have my app open a save confirm message box open. at this point if the user presses ok then a seperate form will open containing a progress bar to visually represent the status of the file saving. the following code is written in VB 2008

The following code says that if the ok button was clicked then show the form with the progress bar

CODE:

Now this is the code that performs the actions of save... but i am getting an "IOException handler error" saying that the proccess is in use

CODE: