Non-fatal error on invalid element in TMX

[Former user]

Original [issue 200](https://code.google.com/p/okapi/issues/detail?id=200) created by @ysavourel on 2012-01-09T13:08:33.000Z:

When the TMX filter finds an invalid element (e.g. a ,sub> in a <seg>) we get a fatal error.

It would be better to skip the given enclosing <Tuv> and generate an non-fatal error message, and continue with the processing at the next (Tuv, or <Tu>).

For an example/test file see the TMX in http://www.uncorpora.org/files/uncorpora\_20090831.zip the second entry has an invalid <sub>).

[Former user]

Comment [1.](https://code.google.com/p/okapi/issues/detail?id=200#c1) originally posted by @fliden on 2012-01-11T00:06:09.000Z:

[Former user]

Comment [2.](https://code.google.com/p/okapi/issues/detail?id=200#c2) originally posted by @fliden on 2012-01-26T21:36:40.000Z: