I had the same issue. Looks like problem is with latest VU+ drivers.
Same happens with SIANO cards and SAT>IP tuners.
Also I noticed same problem at SoloSE.
I fixed problem by downgrading to previous release simply by replacing
/lib/modules/3.13.5/extra/dvb-bcm7356.ko
with same file from vuplus-dvb-modules-vusolo2-3.13.5-20150511.tar.gz.
Which can be found at: