[TYPO3] lost Language Iso Code after upgrade to static_info_tables 1.8.

[Dirk Völlger]

Hello,

I have a multilanguage page set up with Templavoila 0.4.0 on Typo3 3.8.1.
After upgrading static_info_tables to 1.8. I can not switch languages
anymore via sr_languae_menu. When having a look on Pagelanguages, I cannot
choose the official Language (iso) anymore. There is just a message like
[Invalid Value ("26")] .

How  can I fix that?