Hi, Thanks for your help. No, I can't fix the problems about the VstFileType. I can't comment out the line 918 about the VstFileType function because it's already commented out.. This is my file "aeffectx.h" located in "/usr/local/include/vst" after a succesfull compiling of FST. >>>>>>>>Lines 915 to 939:>>>>>>>>> //---Used by audioMasterOpenFileSelector----------- struct VstFileType { VstFileType (char* _name, char *_macType, char *_dosType, char *_unixType = 0, char *_mimeType1 = 0, char *_mimeType2 = 0) { if (_name) strcpy (name, _name); if (_macType) strcpy (macType, _macType); if (_dosType) strcpy (dosType, _dosType); if (_unixType) strcpy (unixType, _unixType); if (_mimeType1) strcpy (mimeType1, _mimeType1); if (_mimeType2) strcpy (mimeType2, _mimeType2); } char name[128]; char macType[8]; char dosType[8]; char unixType[8]; char mimeType1[128]; char mimeType2[128]; }; >>>>>>and the lines 941 to 943>>>>>>> struct VstFileSelect { long command; // see enum kVstFileLoad.... long type; // see enum kVstFileType... long macCreator; // optional: 0 = no creator long nbFileTypes; // nb of fileTypes to used struct VstFileType *fileTypes; // list of fileTypes char title[1024]; // text display in the file selector's title char *initialPath; // initial path Now the second problem, about jack: I'm using version 0.98.1-5. But the devel version is the 0.94.-71 one. I'm going to upgrade it. Thanks for your replies. Yves Frank wrote: > Ok, but your logfile showed 2 problems: One was the issue with VstFileType > that you (hopefully) fixed, and the other is this one: > > > > jfst.c:258: error: `JackThreadInitCallback' undeclared (first use in > > > > this function) > > > > jfst.c:258: error: (Each undeclared identifier is reported only once > > > > jfst.c:258: error: for each function it appears in.) > > > > jfst.c:258: error: parse error before "jack_thread_init" > > which typically means your JACK packages are too old (try at least version > 0.98.1). > > Greetings, > Frank