I'm upgrading JIRA 6.0.7 to 6.1.3 on a Windows 7 64 bit pc where I am an administrator. I am running the upgrade as administrator and it appears to complete.
But it deletes the old Windows 6.0.7 service and does not create a new one.
I picked the option to upgrade the existing one when running the upgrade.
I have had this same problem when upgrading on our Windows 8 32 bit dev and 64 bit Production servers going from 5.1 to 6.0 and had to do a new install and restore from backup which was very time consuming.
Any ideas?