January, February and March 2013 have disapeard from our web cal.
I've had our host check the server and he was unable to determine the issue.
"Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, firstname.lastname@example.org 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.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache Server at www.finelinemusic.com Port 80"
Please let me know if this is a known issue or what steps I can take to trouble shoot further.