Appearance-customize now give internal server error

Replies: 0

http://riverhousecanada.com/bcestate

Version: 3.5.10

Customizr Theme – Appearance – Customise

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, and inform them of the time the error occurred, and anything you might have done that may have caused the error.More information about this error may be available in the server error log.

Had a similar problem earlier and found a plugin was the problem. Can’t find what this could be but frustrating since not a WP guru!

Any Ideas?

Darrell