Studio 2015 and 2017 when uploading a package URGENT

I was sent a package for translation opened it in SDL Studio 2017 followed the instructions and was directed to ''Create return package'' by the wizard before I even started translation.I created the return package (not translated of course) but the wizard will no close. I tried Studio 2015 and  the same happened.It goes without saying that I cannot use either 2015 or 2017 for any project now.I even unistalled Studio 2015 and reinstalled it but the problem remains.Yoou help is much appreciated.

Thank you