Do you still have problems if you try using the CPU Miner to and see if you get similar errors? It could be problems with your Java (possible re-install may help if it is).
I will take a look tonight when I am finished with work.
My Java was crashing last night when I was trying to set up a Testnet account.
Sick avatar BTW
Ok this ended up being my HDD dock.
I have experienced this error with 2 different docks now.
a Thermaltake and a Orinco.
Appears to only affect certain models.
Ok, at least you were able to figure out the issue Superfriend.
Yea, thanks for your help Vneck.
Yes, I can confirm my ORICO 4bay HDD Dock does create an IOexception when reading/writing more than two drives at same time.
Returned for a newer model, hopefully this won't disappoint.