There are a few legitimate reasons why your workshop may not be ready to start:
Something still needs configuring
On the workshop setup page, take a look at the Workshop Summary page. Anything with an exclamation mark in a triangle still requires configuration:
No method selected in the create phase
All workshops must have a create phase in it, otherwise no awesome ideas can be created to be discussed!
Still think there is an issue?
Please see this article on how to get help using Axis