Current version is 0.18.2, so patching to 0.17 would still leave you without the latest version.
patch 0.16 i think
To verify what version you have go Info item in the menu.
The old patch from 0.16 to 0.17 may not be available anymore, unless someone has saved that old file.
Would it make more sense to download the 0.18.2 version and play that?
You do not mention what platform you are on.