Obsolete! It is a consequence of another error - the link exists but the connection is still closed.
I call WolframEngine from C++. The WSLINK is there, and if I run the program without debugger, the following statement executes: WSPutFunction( lp, "EvaluatePacket", 1L); However, in the debugger, the next statement is never reached, and I get this application output: \pSupport6digitAsciiUnicode* Using Ubuntu 22, Qt Creator, GDB. Any help would be very much appreciated!*