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troubleshooting

-                      v5
+                      v6
 In this case you didn't put the dependency package into the right directory. Please refer to [wiki:WindowsMinGW/current#Dependencies the guide] for more information about the dependency package and where to place it. Also make sure that you don't use two nested dependency directories (i.e. {{{/home/username/dependencies/dependencies}}}) but just one.
+=== Q: CMake complains about a missing data directory ===
+A: You probably get an error like this:
+{{{
+$ cm
+[...]
+-- Warning: External data directory not found. If you want to compile while downloading the
+data files, you will have to recompile about four files afterwards and relink everything.
+-- You can specify your own folder with the EXTERNAL_DATA_DIRECTORY variable. Default location
+for the path is orxonox_root/data_extern
+[...]
+}}}
+In this case you didn't check out the external data repository or you didn't name it {{{data_extern}}} or you placed it in the wrong place. See the section "SVN" in [wiki:WindowsMinGW/current#SVN the guide] for more information about the data repository.
 === Q: When I run Orxonox and start a level, it crashes. ===