[TYPO3-english] TYPO3 6.2.x and News: selecting MANY categories in Flexform

[Bert Hiddink [BENDOO e-work solutions]]

Hello,

I am using News and TYPO3 6.2: when selecting multiple categories (>200) 
from the Flexform of the plugin, I get an error..."The fields marked 
with a yellow exclamation mark are not yet correctly filled in. Please 
complete them properly"...I have to uncheck some categories, in order to 
be able to check others...the behaviour seems inconsistent to me, having 
difficulties to determine where the problem comes from.

Is this a javascript issue? Or has this to do with 
TCEFORM.news.config.maxitems?

Strangely enough, at page level where the same categories also are 
available from the same sys_category-table, there I can check/uncheck 
all categories without any problem..

Any ideas or similar experiences?

Thanks in advance!

Regards,
Bert