Hello everyone. Firstly, my apologies if this is not the right place to report this problem, but my guess is that is a cabal related problem. I wrote a package and is now uploaded in Hackage [1]. I do not have any problems installing it (cabal install) in my usual computer (debian). I tried other computer running windows, and it does not build reporting the following error: hatex-guide-1.0.1.3 failed while unpacking the package. The exception was: user error (Invalid file name in tar archive: "hatex-guide-1.0.1.3\\Text\\LaTeX\\Guide\\Aux.hs") I am using a custom script and this module here (Text.LaTeX.Guide.Aux) is generated by the Setup.hs code. Suspecting that it may fail in other computers as well, I have tried to install it in yet another maching (ubuntu). It installed just fine. Therefore, I am seeing different behaviors depending on the system, when the library really does not use any platform specific feature. It should be portable if I am not missing anything. Anyway, note that the error is "while unpacking the package". Mysterious to me. I would gladly look through the Cabal code and look in which step is the error thrown, but I am not familiarized with the code of the library and it may be a big task for such a simple (in appearance) error. However, I can tell that I didn't try (yet). Any help is appreciated. Thanks, Daniel Díaz. -- [1] http://hackage.haskell.org/package/hatex-guide