Internal Server Error 500

Hi. I updated to Joomla 3.4.8 and now when I try to access the Chronoforms control panel from the components menu, in Chrome I get "Server Error 500". In Firefox I just get a blank page.

Chronoforms version is 4.0.5

Any ideas so I access my Chronoforms again? Thanks

Never mind -- an updated to 4.0.6 seemed to fix the problem.