[lazarus] Can't compile.........

[Dave Osborne]

Help!

I'm  new to this, I can't compile the lazarus source, I get the following

mwcustomedit.pas(1827,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(1877,43) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(1904,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(1921,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(1967,43) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(1992,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2054,48) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2072,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2206,69) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2226,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2247,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2265,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2289,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2310,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2343,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2361,58) Error: Incompatible type for arg no. 8: Got
VOID_POINTER, expected LONGINT
mwcustomedit.pas(2821,36) Error: Incompatible type for arg no. 3: Got
SCROLLINFO, expected LPCSCROLLINFO
mwcustomedit.pas(2837,36) Error: Incompatible type for arg no. 3: Got
SCROLLINFO, expected LPCSCROLLINFO
mwcustomedit.pas(2901,26) Error: Incompatible type for arg no. 2: Got
TPOINT, expected POINT
mwcustomedit.pas(4159,34) Error: Incompatible types: got "POINT" expected
"TPOINT"
mwcustomedit.pas(4602,1) Fatal: Internal error 7453984
make.exe[1]: Leaving directory `c:/pp/source/lazarus/components/mwedit'

any advise?
Dave.