OK, error was in both bdsproj files, the main source was
<Source Name="MainSource">SynEdit_R2006.dpk</Source
add to change to :
<Source Name="MainSource">uSynEdit_R2006.dpk</Source
same for
<Source Name="MainSource">SynEdit_D2006.dpk</Source
add to change to :
<Source Name="MainSource">uSynEdit_D2006.dpk</Source
I am now able to compile, many thanks