Cannot open STAAD from Excel VBA Openstaad- Create Object - Regd

Dear All,

I have done some coding using Excel OPENSTAAD. I used Set objOpenSTAAD = CreateObject("StaadPro.OpenSTAAD").

Usually when i execute the command, STAAD opens up by itself runs the analysis.

But all of sudden im getting run time 429 error. The analysis runs only after i have opened the STAAD. There is some way to bypass this to enable excel to open STAAD automatically. 

Thank You