CRM 2011 Solution Export Problem

Hi Guys,

I have the problem to export the Unmanaged solution in CRM 2011

Basically I Just converted the Managed To Unmanaged solution and sort out  the Warnings while exporting

but the thing is After clicking the export as a Unmanaged the solution is not responding any thing means not asking any thing to save the solution

Could you please help me to sort out the problem

Thanks