The first problem still remains in blocks "coming events" / "events after"

http://www.peak.ne.jp/xoops/uploads/img3fae36322be3b.jpg

I have updated my pical version.
I have added the three above mentioned lines to pical_constants.php. But nothing helps.

define('_PICAL_LOCALE','nl_NL') ;
define('_PICAL_STRFFMT_DATE','%x') ;
define('_PICAL_FMT_MD','%2$s %1$s') ;

define('_PICAL_DTFMT_TIME','a g:i') ;
define('_PICAL_DTFMT_DATE','j M Y (D)') ;
define('_PICAL_DTFMT_MD','j M') ;

define('_PICAL_FMT_YMD','%3$s %2$s %1$s') ;
define('_PICAL_FMT_YMW','%3$s %2$s %1$s') ;
define('_PICAL_FMT_YEAR_MONTH','%2$s %1$s') ;

Second problem is in the "Scheduler"/"Detail view"

http://www.peak.ne.jp/xoops/uploads/img3fae37b209a7c.jpg

As you can see, the name of the day (Wed) is in English, although pical_vars.phtml looks like this:
// Can't use tags (for options & minicalendar)
$this->week_short_names = array('Zo','Ma','Di','Wo','Do','Vr','Za','Zo') ;

// Can use tags (for Monthly & Weekly View)
$this->week_middle_names = array('Zo','Ma','Di','Wo','Do','Vr','Za','Zo') ;

I hope you have a solution for these problems. If you do I can send you the translation.