Is it synced? Which pool did you mine that from? This happened to me also with about 5k coins .... i don't know and never figured it out either .... so if you do... please post it. Mine was fully synced and i had them in my account then gone... and no transactions to show from it either.
The wallet is fully synchronized. I do not remember exactly, but I kind of got it here -
http://intensecoinpool.sytes.net/ Blockexplorer is silent.
