I have a client where we are heavily customizing Leads and Opportunities modules. During the upgrade process from 4.2.0a to 4.5.0b the lead EditView drop down values failed to appear.

The problem was isolated to a difference for the <select> tag options between the EditView.html and EditView.php files for the <select> html tags. A simple correction to the EditView.html files resolves the problem.

My upgrade path was not documented in the manuals and I'm still inventing it, so don't ask for the details.

The root cause of the problem was that the EditView.php file wanted to load options like STATUS_OPTIONS and the EditView.html wanted to read options like OPTIONS_STATUS.

The various upgrade wizards clued me in to these problems in a general way, but it has taken ~8 hours to fix.

-bill