Is this a known bug ? - So should I try an earlier version of flext?
It works with flext0.4.5
Hmmm, in this case i would suspect it's the well-known problem with the new/delete operators. syncgrain~ is using an external lib, no? In this case could you try to use the current flext and compile with -DFLEXT_NOGLOBALNEW ?
best greetings, Thomas