Unable to show block for articles created by user on user page

Hello and thank you in advance for any assistance.

I would like to be able to list the articles created by a user on a block to be displayed when visitors are looking at the user's page.

I was able to get it setup to the point where I can put the user ID in the arguments field and it works, however when visiting the user's page it no longer works.

I am using some code I found for Drupal 6 and views. It requires using code in both ends (the view) and the block, seems pretty simple, not sure why it's not working.

I would appreciate any explanation of this feature.

I am using the code and instructions from a previous post-- node/228959