[vdr] error compiling burn-plugin

When I cimpile the burn-plugin I get the following error: Plugin burn: make[1]: Entering directory `/home/braun/vdr/vdr-1.4.4/PLUGINS/src/burn-0.0.5'g++ -g -Wall -Woverloaded-virtual -c -DPLUGIN_NAME_I18N='"burn"' -D_GNU_SOURCE -DDVDDEV='"/dev/dvd"' -DISODIR=NULL -I../../../include -I../../../../DVB/include-o burn.o burn.c burn.c:32: error: conflicting return type specified for 'virtual bool cPluginBurn::Active()' ../../../include/vdr/plugin.h:43: error: overriding 'virtual cString cPlugin::Active()' burn.c: In member function 'virtual const char* cPluginBurn::CommandLineHelp()':burn.c:58: warning: converting to non-pointer type 'bool' from NULL make[1]: *** [burn.o] Fehler 1

Cheers H.Braun