Ok, disk space wasn't the issue.. I'm getting the following when I try to publish feeds:
grapheneapi.grapheneapi.RPCError: 0 exception: unspecified
10 assert_exception: Assert Exception
o.feed.settlement_price.base.asset_id == o.feed.core_exchange_rate.base.asset_id:
    {}
    th_a  asset_evaluator.cpp:590 do_evaluate
    {"o":{"fee":{"amount":100000,"asset_id":"1.3.0"},"publisher":"1.2.67704","asset_id":"1.3.285","feed":{"settlement_price":{"base":{"amount":3596211,"asset_id":"1.3.285"},"quote":{"amount":1000000000,"asset_id":"1.3.0"}},"maintenance_collateral_ratio":1750,"maximum_short_squeeze_ratio":1500,"core_exchange_rate":{"base":{"amount":1000000000,"asset_id":"1.3.0"},"quote":{"amount":3596211,"asset_id":"1.3.285"}}},"extensions":[]}}
    th_a  asset_evaluator.cpp:610 do_evaluate
    {}
    th_a  evaluator.cpp:42 start_evaluate
    {}
    th_a  db_block.cpp:628 apply_operation
    {"trx":{"ref_block_num":48293,"ref_block_prefix":2029125297,"expiration":"2015-10-09T22:26:39","operations":[[19,{"fee":{"amount":100000,"asset_id":"1.3.0"},"publisher":"1.2.67704","asset_id":"1.3.285","feed":{"settlement_price":{"base":{"amount":3596211,"asset_id":"1.3.285"},"quote":{"amount":1000000000,"asset_id":"1.3.0"}},"maintenance_collateral_ratio":1750,"maximum_short_squeeze_ratio":1500,"core_exchange_rate":{"base":{"amount":1000000000,"asset_id":"1.3.0"},"quote":{"amount":3596211,"asset_id":"1.3.285"}}},"extensions":[]}]],"extensions":[],"signatures [........]
Updating to master.. my last build was about 20 hours ago