I just had an update of Start11 version 2.11 downloaded and installed. Again, it demanded a reboot during my work day. I refused the reboot request, ended all running explorer.exe processes via Task Manager, and using Task Manager launched explorer.exe.
Just as in the past, Start11 is working perfectly with no issues without rebooting. About shows Start11 version 2.11 is successfully running. Now I will see how long I can continue to successfully use Start11 without rebooting. My previous record was over one week without rebooting and no issues.
End of Bhayl's quote
It is highly likely that you are in fact using v 2.1 dlls not 2.11.
If a file is locked during install it will only be replaced on the reboot and the OS is set to perform this. The config is not locked (unless running), so that will be updated and thus show you the new version.
Please do reboot when convenient as otherwise your install is not really using the new files. We really do not ask for reboots just for fun.