Hi Ryan,
I can confirm this.
There has been a lot of compatibility issue with ESXi 5.1 and VDP 6.1.3
There has been NFC ticket issue, failed to add disk, SSL connection errors, LVM errors and so on.....
I have been able to get this reproduced in-house, but the test results are little tricky as they tend to work / not work on random basis.
My suggestion would be not to use VDP 6.1.3 if you are running ESXi 5.1
Suhas
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