Yosemite DP4 Issues?

I have been using the beta Viscosity 1.4.11 (1186) successfully for Yosemite DP2 & DP3. It seems that that the new Yosemite DP4 is causing some issues, however. Viscosity launches properly. Any connection attempts, however, fail with the error:

“Cannot allocate TUN/TAP dev dynamically”

I have reinstalled Viscosity in thinking that the stated problem may be a permissions issue, but this basic step goes not resolve the problem. Perhaps a new gotcha? Appreciate any feedback on this matter.

same problem here too
i tried with http://www.sparklabs.com/downloads/beta/Viscosity%201.4.11b8.dmg and http://www.sparklabs.com/downloads/beta/Viscosity%201.4.11b7.dmg

Hi All,

Please see:
https://www.sparklabs.com/forum/t/beta-latest-build-of-viscosity-for-mac/46/100

Cheers,
James