Currently when a csv has a header line, it is expected that it has the same amount of columns as the rest of the file. This mostly is not the case when considering old meshup animation files and therefor we need to switch to another csv reader library or write our own.
For now throwing an error is sufficient since just removing the header from the file fixes the problem.
With 7341ab2e873c317f9d917b44a6671d4e66206ad4 the problem should be fixed, but I should add some warnings to let people now if their header get's ignored or is broken.
Currently when a csv has a header line, it is expected that it has the same amount of columns as the rest of the file. This mostly is not the case when considering old meshup animation files and therefor we need to switch to another csv reader library or write our own.
For now throwing an error is sufficient since just removing the header from the file fixes the problem.