Dan Wolfgang, a talented plugin developer and member of the Movable Type community, recently wrote an informative blog entry on upgrading plugins for use with both Movable Type 4 and 5.

In the blog entry, Dan offers several tips based on difficulties he personally encountered, providing a useful resource for other MT developers. The topics he covers in the blog entry include:

• Version-specific content
• Form elements
• "Undefined Subroutine" errors
• Building menus
• Listing framework
• Popup dialogs
• Object listings in pop-up dialogs

Check out Dan's blog for more information on Movable Type plug-in development along with other tips and tricks!