the C dll compiles fine (VC++) in debug AND release version<br>with 0 warnings 0 errors<br><br>i get from VB an "out of stack" error message;<br>sometimes it would work fine in release version for 3-5 processses and it would then crash.<br><br>works fine in debug version<br><br>I don't have recursive routines in the VB calling program<br><br>thank for any help/links<br><br>