Run Optistruct solver from Hypermesh

HI,

I have a problem with Optistruct and Hypermesh. I select Optistruct as the desidered solver from Applications>User Profiles but when I run an analysis only it's generated the .fem file but Optistruct doesn't open and thereferore it doesn't work. The only way is to open manually Optistruct, load the .fem file and run the analysis. 

I hope I was as clear as possible and thank you for your help