title: How to fix error "Error copying library com.mojang:netty:1.8.8" for MCP 1.7.10
body: <p>I've been trying to decompile MCP 1.7.10 but I keep getting this error. The error says it has something to do with Minecraft 1.8.8 but I want 1.7.10. I don't know if that has to do anything with it. Here is the error I keep getting:</p>
  <pre><code>== MCP 9.04 (data: 9.08, client: 1.7.10, server: 1.7.10) ==
  &quot;scalac&quot; is not found on the PATH.  Scala files will not be recompiled
  # found ff, ff patches, srgs, name csvs, doc csvs, param csvs, astyle, astyle config, rg, ss
  Looking in C:\Users\jacks\AppData\Roaming\.minecraft\versions for mc installs... OK
  Copying assets... OK
  Parsing JSON file... OK
  Looking for minecraft main jar... OK
  &gt; Checking libraries...
          Copying library netty... Error copying library com.mojang:netty:1.8.8
  Press any key to continue . . .
  </code></pre>