I have been doing some testing on my TS140 as I have seen some strange variations in my xpenology DSM 5.0 - 4493 installs. In my initial install, where I only had 1 hard drive in it (WD RED 4TB), the initial DSM 5.0 installed fine, and I did the manual install to Update 5. I did have to do a hard reset after the update as the system froze after bootup (after the post message. I would get the diskstation login, but it would then hang) After booting back up, it worked fine, and I was able to create shared folders, including encrypted shares. I then added a 2nd and 3rd 4TB drive, and all worked fine. I was doing a lot of testing with DSM 5.0, and decided to do a fresh install, and when I did the update 5, I again had to do the hard reboot. (this seems normal, as I have seen the issue with previous updates as well). This is when I ran into the same "Operation not possible. Please sign in DSM and try again" message when I tried to create an encrypted share. This got me wondering why it worked the first time, but not the second, and the only difference in the installs was the 1 vs 3 drives. So, I did another test and did a fresh install with just 1 drive, did an update 4 (I wanted to see if I got the same freeze, that required a hard reboot, which it did),, and then did an update to 5. This time around, I was able to add encrypted shares without the error.
I ran out of testing time, but I am going to do the following:
1. Do a new fresh install to DSM 5.0, and then do an update to update 5 with just 1 drive. (I will do this twice, once where I only remove the SHR volume from the disk, where it will show as migratable, and one time where I will completely wipe the drive before I do the install. Just to see if there is any difference) If everything works fine, I will then:
2. Do a new fresh install of DSM 5.0, and then do an update to update 5 with all 3 disks.
Will report back.