VU+ Solo2 mgcamd help / new image and screen be black

Hallo,

ive a VU+ Solo2 and got the last time Blackhole 2.1.3.
All is running fine the last time. Signature OK, ECM is up 150ms to 500ms. no Probs.
But when its running long time or when i use the openvpn, cam dont show ecm after 1hour, openvpn reconnect after 1hour,
so i restart with blue panel and get green screen error and boot reloop with green screen.

1. First i try to update to Blackhole 2.1.6.(1).
2. Configure receiver
3. Sync Channel list with dreamedit
4. Install TSPanel via DCC
5. Download mgcamd 1.38c (for use the CWS lins)
6. Copy files into usr/keys/ mg_cfg and newcamd.list (with the cws line)
7. Restart GUI and start mgcamd 1.38c with blue panel, it show signature ok, around 150ms. but screen is getting black

... o.O. wtf dont know what i do wrong. Have flash again and do it again but no chance to get it running, black screen is showing.
So i Flash again with Complete Backup from 2.1.3 and mgcamd is running good, after flashing i get no black screen.

Need help, dont understand the Problem, hope anyone can help.

greetings Nightmare