Draftsight failure to launch.

I'm having problem with Draftsight in that it will not start up...

Have sent the report in on Monday via email and had no response at all....

I need this for my work and and cant be without it, productivity is now suffering as it is a full working week without it.

Has anyone else had this issue? and is there a fix I can do???

Frustration doesnt start to cover it!