Mentioned it in the software forums, but, fwiw...
After transferring my IK samples libraries to an external hard drive last fall, I had to re-authorize every instrument. The whole process was cumbersome and made even worst by the fact that the Authorization Manager kept on prompting me to download/update a newer version in between authorizations (!). But I went through it.
Why did that happen? I've moved my Kontakt instruments at the same time and never had an issue. Dumb copy protection scheme? Probably.
Now, one of the ongoing issues I've had w/ a couple of those instruments (which haven't been updated since 2009/2010, need I mention it) is that after loading/auditioning a couple of patches, they start to freeze. I mean, they still play back any patch I load, but the GUI itself becomes irresponsive, as well as my DAW itself.
And the lag becomes longer and longer w/ every patch. This happens w/ SampleTron, SampleMoog and Sonik Synth - Sampletank itself works fine.
So I thought I'd simply use Sampletank to play those banks and attempted to set the directory one step higher in ST itself, so that it'd see all my IK instruments in that main folder.
Well, it froze. And then when I managed to re-launch it, it told me that my 10 trial had expired. And ask me to re-authorize. Not just Sampletank, but all the others as well.
Unfortunately, or fortunately, the internet was off, so there was simply nothing I could do.
That was the icing on the cake.
I eventually managed to re-authorize them, 48 hours later when our connexion was fixed. Sonik Synth had me going through the authorization process at least 7 or 8 times - and every time, it first needed to scan the library, which took like almost 5 minutes.
I did it only in order to be able to sample some of those instruments manually and import them in my Logic sampler. And that's the last thing I want to have to do w/ them.