This question already has an answer here:
I mine for fun. Please no responses saying "You really shouldn't mine on that computer. At all. Forget mining exists."
Whenever I try to mine using the instructions given in the README of the GUIMiner, it gives me an error as soon as the bitcoin.exe launches as a server.
Here's the error:
Invalid -rpcallowip subnet specification: *. Valid are a single IP (e.g. 188.8.131.52), a network/netmask (e.g. 184.108.40.206/255.255.255.0) or a network/CIDR (e.g. 220.127.116.11/24).