kdev-xdebug crash after update

[Werner Joss]

hello all,
I just managed to rebuild kdev-xdebug plugin after upgrade from kdevelop 4.5.x 
to 4.6 (of course, also upgraded development files).
checked out again kdev-xdebug from git (master).
build process went ok, .desktop file has correct version (16).
however, kdevelop now crashes upon startup.
backtrace is at http://goo.gl/HqwIu0
maybe anyone can give a hint about what went wrong ?

Werner