PloneFormGen missing from Add list
I installed the release of PloneFormGen in my Products directory in Plone 2.5.x, and neither the ZMI (/Control_Panel/Products) nor Plone (Quick Installer) seemed to recognize it after restarting my Zope.
Zope has probably encountered an error in the course of loading the product.
The most likely (and common) explanation is that one of PloneFormGen's dependencies is missing.
Check to make sure that you have loaded the ScriptableFields bundle into your products directory. You should see PythonField, TALESField and TemplateFields in the ZMI /Control_Panel/Products list.
If that doesn't cure the problem, try checking your event.log for related error messages. You may wish to try starting Zope in foreground mode (bin/zopectl fg for a standalone zope) for more diagnostics.