After installation I get two groups of error messages:
1) on top of my screen:
: Assigning the return value of new by reference is deprecated in C:\Program Files\EasyPHP5.3.0\www\plugins\system\adminbardocker.php on line 70

Deprecated: Assigning the return value of new by reference is deprecated in C:\Program Files\EasyPHP5.3.0\www\plugins\system\nonumberelements.php on line 55

2) in the right sidebar, under plugin parameters:
Notice: Undefined variable: random in C:\Program Files\EasyPHP5.3.0\www\plugins\system\nonumberelements\elements\loadlanguage.php on line 55

Notice: Undefined variable: random in C:\Program Files\EasyPHP5.3.0\www\plugins\system\nonumberelements\elements\loadlanguage.php on line 55

The ones under item 1) also appear on my webpages.

Anybody any idea what might be wrong?

Yes, these are php messages. Will be fixed in next version. You can simply tell php to not show these warnings through the .htaccess file. Add this line:

Thanks for the quick reply. It fixed the messages and more:

Without the entry in .httacces both the jump to top and jump to bottom had the same effect: jump to top. With the entry, both work as expected.

Handy tool!!

i added this line php_flag display_errors off to my htaccess but the error message not disapear.

I guess you are using php 5.3?
Your live server probably won't (and not show the message).
Will be new release soon. You can also install the NoNumber! Manager, that already has the fixes (will overwrite the elements used by all my extensions)
www.nonumber.nl/nonumbermanager

i installed the component but the error message don't disappear