server: bind failed

My miner was working fine until yesterday when I started getting this.

ETH: Stratum - Connected (eth-eu1.nanopool.org:9999)
ETH: Authorized
Setting DAG epoch #115...
server: bind failed with error: 98 (check -mport option value), next attempt in 20sec...
Setting DAG epoch #115 for GPU #0
Create GPU buffer for GPU #0
OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
Setting DAG epoch #115 for GPU #0
GPU 0, OpenCL error -38 - cannot write buffer for DAG
server: bind failed with error: 98 (check -mport option value), next attempt in 20sec...
GPU0 t=58C fan=47%
WATCHDOG: GPU error, you need to restart miner


Any ideas? Thanks.