'theForm.__EVENTTARGET' is null or not an object.

Using VisualStudio 2005/C#:

I have a page that adds new deposits that can consist of money going to several different accounts. On that page is a datagrid listing all the accounts for the deposit with button columns (type="LinkButton") to add, edit and delete. These all seem to work fine, unless I come to that page from any other page that brings in a specific deposit to view, edit or delete. In that case, NONE of my buttons work (Including a linkbutton to run a print script) and I get the above error.

I have looked for hours on the web and have tried adding "enableViewState" to the page, registering the hidden field in the page load -- everything I could find.

Any help would be appreciated!