Build GPS from source.

I tried to use prebuilt GPS on a Fedora-11 and faild with:
Execution terminated by unhandled exception
Exception name: STORAGE_ERROR
Message: stack overflow (or erroneous memory access)
Call stack traceback locations:
0x911ccbb

It works find on my CentOS boxes.
So i decided to try to build from source (svn trunk) and got the
folowing error:
bookmark_views.adb:617:41: invalid tagged conversion, not compatible
with private type "C_Dummy" defined at glib.ads:152

Using the latest GTKada svn trunk

Am i just to eager or ??

/Per