[TYPO3-team-templavoila] Create new content elements with templavoila is not possible

[Burkhardt Wenzel]

Hey all,
there is a strange problem concerning to create new content elements
in the backend of TYPO3, the right frame is empty.
Klicking on the button "new content element" calls the function
/typo3conf/ext/templavoila/mod1/db_new_content_el.php

Following things were done without fixing the problem:
Upgrading from a recent version of templavoila to the latest version:

- Delete all German umlauts from templates
- update all mappings

With SQL to fix the problem of changing the field templatemapping 
successfully from MEDIUMTEXT into MEDIUMBLOB:


UPDATE tx_templavoila_tmplobj SET   = 
convert(CONVERT(CONVERT(templatemapping USING utf8 ) USING BINARY) USING 
latin1);
ALTER TABLE  `tx_templavoila_tmplobj` CHANGE  `templatemapping` 
`templatemapping` MEDIUMBLOB;


Configuration:
- TYPO3 4.5.11
- Templavoila 1.6.1
- Static Info Tables 2.3.0

Hints are welcome
Thx a lot and have a nice day
Burk