kbrix2000

In the mean time, I noticed that on branch "master" the problem was fixed by commit [Cbc_C_Interface::synchronizeParams (f25c45d)](https://github.com/coin-or/Cbc/commit/f25c45d188ce9cc2128be02966d4c5e8eb582b1a) provided by Samuel S. Brito. It would be very helpful to backport...

Yes, I agree, it seems that the interface in stable/2.10 does not support multiple threads via the C interface. Are there other options besides using files and the command line...

@jhmgoossens Thank you very much for your reply!