Thats because you need the mipsel version for the BlackHole image..
I tried that too. Now I get this message:
Package enigma2-plugin-extensions-tspanel wants to install file /user/script/uptime.sh
But that file is already provided by package *vuplus-blackhoe Execution finished!!
And nothing is installed. I have Blackhole 1.7.8 lite by the way.