Just tested on VU+ Solo4k, OpenViX 4.2.001. Again no issues.

Welcome to OpenViX for vusolo4k
openvix 4.2 vusolo4k

vusolo4k login: root
root@vusolo4k:~# opkg install enigma2-plugin-drivers-dvb-usb-turbo
Installing enigma2-plugin-drivers-dvb-usb-turbo (1.0-r3) on root.
Downloading http://www.openvix.co.uk/feeds/openv...1.0-r3_all.ipk.
Installing vuplus-tuner-turbo (3.14.28-20151104) on root.
Downloading http://www.openvix.co.uk/feeds/openv...4_vusolo4k.ipk.
Installing kernel-module-dvb-usb (3.14.28-.3) on root.
Downloading http://www.openvix.co.uk/feeds/openv...3_vusolo4k.ipk.
Installing kernel-module-cypress-firmware (3.14.28-.3) on root.
Downloading http://www.openvix.co.uk/feeds/openv...3_vusolo4k.ipk.
Installing kernel-module-dvb-usb-v2 (3.14.28-.3) on root.
Downloading http://www.openvix.co.uk/feeds/openv...3_vusolo4k.ipk.
Configuring kernel-module-dvb-usb.
Configuring kernel-module-dvb-usb-v2.
Configuring vuplus-tuner-turbo.
Configuring kernel-module-cypress-firmware.
Configuring enigma2-plugin-drivers-dvb-usb-turbo.
root@vusolo4k:~#