[TYPO3-calendar] Backend login fails after extending event table via kickstarter

[klaus bossert]

Hi Lars,
Hi List,

Am 15.06.2012 12:30, schrieb Lars Beck [e8media]:
 > I extended the tx_cal_event table via kickstarter, this also works as
 > expected. But there is no way to access the backend again once I
 > someone has logged out, Typo3 simply does not accept the given access
 > data. This issue only appears when extending tables related to cal,
 > any other extension works.

i have _exactly_ the same problem as descibed above using the latest 
TYPO3 (4.7.4), Kickstarter (0.5.3) and the svn-version of cal.

Has anybody a hint or solution for this really weird behaviour?

Thanks in andance,
Klaus