[lazarus] ERROR On mwcustomedit

[Pellegrin,Emmanuel]

Hi everyone  and especially shane..
i've downloaded this morning you're latest version to try  the newest
features.
But there is a Pb In mwcustomedit when I try to compile.
Her is the error : 
Compiling global.pp
Compiling .\comp\mwedit\mwcustomedit.pas
mwcustomedit.pas(1015,37) Hint: Parameter SENDER not used
mwcustomedit.pas(1350,38) Hint: Parameter SENDER not used
mwcustomedit.pas(1726,16) Error: identifier idents no member SETCANVAS
mwcustomedit.pas(1726,25) Error: Illegal expression
mwcustomedit.pas(1726,25) Fatal: Syntax error, ; expected but ( found
make.exe[1]: *** [lazarus.exe] Error 1
make.exe[1]: Leaving directory `d:/pp/lazarus'
make.exe: *** [ide] Error 2



in fact the error line at 1726  is : 
 fHighLighter.SetCanvas(TextCanvas);
so i've looked on mwHighlighter unit to see this method.
and there is no implementation of this method because this methode is
declared as
"abstract" 
can you explain me  you can compile ?
By..