Hi Asad,
I am not aware of the point you mentioned that you already deleted the BO. You haven't specified it in any of your comments from first. OK lets leave this and give a try by installing the new patch to the 1308. I already told that you are using 1308 only check the updates for the studio. Updates in the sense for every 15 days SAP will release a new build version for the existing studio version. At present the build version of the studio is the one image I have produced to u in my above comment. Now I am saying to check the build version and if you found that is old to compared with the one what I have shown, then download the new build patch and it should be available with this "SOLOSTUDIO09_0-10013014" name in the service market place. Download it and install it and then give a try, let me know incase this is not working.
Regards..
Hanu K