Why won't my client work?

It just keeps at "Loading..."
Does anyone have a fixed one, and can send it to me non zip/rar?

could be your connection, you have a pet with a new ability that is not function-able with you hexed client, could be you used a proxy a long time ago and your trying to connect to a server that the proxy was based from... who knows details and a screen shot are the best idea like music said...(also maby right section next time :P)

Also there is another thing that may cause that. If it's that another thing then it can be fixed like this:
Right click --> Settings...
Got to memory tab and put it to 0kb and it'll ask you something just press ok and close settings.