[Lazarus] Error building IDE using LazBuild

[shoKwave]

Hi list,

I just tried to update my trunk-installation and got this:

./lazbuild -B --build-ide=
An unhandled exception occurred at $00000000006C907B :
Exception : TFPCUnitToSrcCache.GetConfigCache missing TestFilename
   $00000000006C907B line 8676 of definetemplates.pas
   $00000000006C92AA line 8707 of definetemplates.pas
   $00000000006C9425 line 8734 of definetemplates.pas
   $00000000006C8FE8 line 8667 of definetemplates.pas
   $000000000075BB07 line 646 of buildmanager.pas
   $00000000007628FD line 1922 of buildmanager.pas
   $0000000000762BD7 line 1948 of buildmanager.pas
   $00000000005AF2DD line 403 TBuildManager.SetBuildTargetIDE OS=linux 
CPU=x86_64 WS=gtk2 of lazbuild.lpr
   $00000000005B23FC line 1019 of lazbuild.lpr
   $00000000005B42F0 line 1245 of lazbuild.lpr

my system:
- Ubuntu 10.10 x64
- FPC trunk r16750
- Laz trunk r28961

I always do a >>make clean all<< before compiling with lazbuild. r28958 
works fine.

regards
Ingo