I'm getting:

Cannot create a quiesced snapshot because the create snapshot
operation exceeded the time limit for holding off I/O in the frozen
virtual machine. (under VDR Configuration, log, it says "error -1 ( unknown)")

...when I try to VDR a vm with the VMWare tools VSS support installed. If I remove vss support, it will work but from what i've read that would mean that the backup does not truncate logs etc. I've created a new VDR machine, created freshly installed servers to test on, even added the vm hostnames and ip's to VDR's host file, i've tried a LOT of stuff. Any still that error.

Has anybody successfully resolved this issue?

Thanks

Andrew