500 Internal Server Error after updated to latest version

Hi Ben,

Weird things happened after updated theme to latest version for my site: http://www.edinskincare.com

At first only revolutionary slider and site title could be loaded & the rest were blank in home page.

Then home page can be fully loaded after several hours but there is 500 Internal Server Error message when I clicked into other pages/posts.

Wordpress dashboard still can be accessed though…

Messages stated as below:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at [email protected] to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

Please kindly help…

Yours Sincerely,
Ms. Tang