Given that most current or recent ASIC are measured in TERAHASH/s (1000 GH), there really isn't much point to trying to mine Bitcoin on the old Gridseed GC3355 based gear like the Orb. Even if you got them working on BTC you'd be putting a lot more money into the electric to run them for a day than they'd mine in a year (unless you have FREE electric, then it's STILL a ton more profitable to stick with mining Scrypt).
They CAN be profitable - BARELY - if you have cheap enough electric on Litecoin for now.
Agreed, it was BARELY even profitable to mine SHA-256 when they first came out, definitely not now. If you don't get free power, then I would say don't bother trying to mine both. Stick to Scrypt. How many miners are you running? It could be your power supply isnt powerful enough to power the BTC mining so thats why it is throwing errors.